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class="firstHeading mw-first-heading">65803 Didymos</h1> <div class="tagline"></div> </div> <ul id="p-associated-pages" class="minerva__tab-container"> <li class="minerva__tab selected"> <a class="minerva__tab-text" href="/wiki/65803_Didymos" rel="" data-event-name="tabs.subject">Article</a> </li> <li class="minerva__tab "> <a class="minerva__tab-text" href="/wiki/Talk:65803_Didymos" rel="discussion" data-event-name="tabs.talk">Talk</a> </li> </ul> <nav class="page-actions-menu"> <ul id="p-views" class="page-actions-menu__list"> <li id="language-selector" class="page-actions-menu__list-item"> <a role="button" href="#p-lang" data-mw="interface" data-event-name="menu.languages" title="Language" class="cdx-button cdx-button--size-large cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--icon-only cdx-button--weight-quiet language-selector"> Language </a> </li> <li id="page-actions-watch" class="page-actions-menu__list-item"> <a role="button" id="ca-watch" href="/w/index.php?title=Special:UserLogin&returnto=65803+Didymos" data-event-name="menu.watch" class="cdx-button cdx-button--size-large cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--icon-only cdx-button--weight-quiet menu__item--page-actions-watch"> Watch </a> </li> <li id="page-actions-edit" class="page-actions-menu__list-item"> <a role="button" id="ca-edit" href="/w/index.php?title=65803_Didymos&action=edit" data-event-name="menu.edit" data-mw="interface" class="cdx-button cdx-button--size-large cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--icon-only cdx-button--weight-quiet edit-page menu__item--page-actions-edit"> Edit </a> </li> </ul> </nav>  <div id="mw-content-subtitle"></div> </div> <div id="bodyContent" class="content"> <div id="mw-content-text" class="mw-body-content"><script>function mfTempOpenSection(id){var block=document.getElementById("mf-section-"+id);block.className+=" open-block";block.previousSibling.className+=" open-block";}</script><div class="mw-content-ltr mw-parser-output" lang="en" dir="ltr"><section class="mf-section-0" id="mf-section-0"> <style data-mw-deduplicate="TemplateStyles:r1236090951">.mw-parser-output .hatnote{font-style:italic}.mw-parser-output div.hatnote{padding-left:1.6em;margin-bottom:0.5em}.mw-parser-output .hatnote i{font-style:normal}.mw-parser-output .hatnote+link+.hatnote{margin-top:-0.5em}@media print{body.ns-0 .mw-parser-output .hatnote{display:none!important}}</style><div role="note" class="hatnote navigation-not-searchable">For other uses, see <a href="/wiki/Didymos_(disambiguation)" class="mw-redirect mw-disambig" title="Didymos (disambiguation)">Didymos</a>.</div> <style data-mw-deduplicate="TemplateStyles:r1257001546">.mw-parser-output .infobox-subbox{padding:0;border:none;margin:-3px;width:auto;min-width:100%;font-size:100%;clear:none;float:none;background-color:transparent}.mw-parser-output .infobox-3cols-child{margin:auto}.mw-parser-output .infobox .navbar{font-size:100%}@media screen{html.skin-theme-clientpref-night .mw-parser-output .infobox-full-data:not(.notheme)>div:not(.notheme)[style]{background:#1f1f23!important;color:#f8f9fa}}@media screen and (prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .infobox-full-data:not(.notheme) div:not(.notheme){background:#1f1f23!important;color:#f8f9fa}}@media(min-width:640px){body.skin--responsive .mw-parser-output .infobox-table{display:table!important}body.skin--responsive .mw-parser-output .infobox-table>caption{display:table-caption!important}body.skin--responsive .mw-parser-output .infobox-table>tbody{display:table-row-group}body.skin--responsive .mw-parser-output .infobox-table tr{display:table-row!important}body.skin--responsive .mw-parser-output .infobox-table th,body.skin--responsive .mw-parser-output .infobox-table td{padding-left:inherit;padding-right:inherit}}</style>65803 Didymos (<a href="/wiki/Minor_planet_provisional_designation" class="mw-redirect" title="Minor planet provisional designation">provisional designation</a> 1996 GT) is a sub-<a href="/wiki/Kilometer" class="mw-redirect" title="Kilometer">kilometer</a> <a href="/wiki/Asteroid" title="Asteroid">asteroid</a> and <a href="/wiki/Binary_asteroid" title="Binary asteroid">binary system</a> that is classified as a <a href="/wiki/Potentially_hazardous_asteroid" class="mw-redirect" title="Potentially hazardous asteroid">potentially hazardous asteroid</a> and <a href="/wiki/Near-Earth_object" title="Near-Earth object">near-Earth object</a> of the <a href="/wiki/Apollo_asteroid" title="Apollo asteroid">Apollo</a> group.<a href="#cite_note-Apollo-4">[a]</a> The asteroid was discovered in 1996 by the <a href="/wiki/Spacewatch" title="Spacewatch">Spacewatch</a> survey at <a href="/wiki/Kitt_Peak_National_Observatory" title="Kitt Peak National Observatory">Kitt Peak</a>, and its small 160-meter <a href="/wiki/Minor-planet_moon" title="Minor-planet moon">minor-planet moon</a>, named <a href="/wiki/Dimorphos" title="Dimorphos">Dimorphos</a>, was discovered in 2003. Due to its binary nature, the asteroid was then named Didymos, the <a href="/wiki/Greek_language" title="Greek language">Greek</a> word for 'twin'. <table class="infobox"><caption class="infobox-title fn org">65803 Didymos</caption><tbody><tr><td colspan="2" class="infobox-image"><a href="/wiki/File:Didymos-Dimorphos_true_orientation.png" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/0/05/Didymos-Dimorphos_true_orientation.png/290px-Didymos-Dimorphos_true_orientation.png" decoding="async" width="290" height="290" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/0/05/Didymos-Dimorphos_true_orientation.png/435px-Didymos-Dimorphos_true_orientation.png 1.5x, //upload.wikimedia.org/wikipedia/commons/0/05/Didymos-Dimorphos_true_orientation.png 2x" data-file-width="560" data-file-height="560"></a><div class="infobox-caption">Didymos (bottom left) and <a href="/wiki/Dimorphos" title="Dimorphos">Dimorphos</a> (top right) photographed by the <a href="/wiki/Double_Asteroid_Redirection_Test" title="Double Asteroid Redirection Test">DART</a> space probe</div></td></tr><tr><th colspan="2" class="infobox-header" style="background-color:#FFC2E0">Discovery <a href="#cite_note-jpldata-1">[1]</a></th></tr><tr><th scope="row" class="infobox-label" style="max-width:11em;"><a href="/wiki/List_of_minor_planet_discoverers" title="List of minor planet discoverers">Discovered by</a></th><td class="infobox-data"><a href="/wiki/Spacewatch" title="Spacewatch">Spacewatch</a></td></tr><tr><th scope="row" class="infobox-label" style="max-width:11em;"><a href="/wiki/List_of_observatory_codes" title="List of observatory codes">Discovery site</a></th><td class="infobox-data"><a href="/wiki/Kitt_Peak_National_Observatory" title="Kitt Peak National Observatory">Kitt Peak National Observatory</a></td></tr><tr><th scope="row" class="infobox-label" style="max-width:11em;">Discovery date</th><td class="infobox-data">11 April 1996</td></tr><tr><th colspan="2" class="infobox-header" style="background-color:#FFC2E0">Designations</th></tr><tr><th scope="row" class="infobox-label" style="max-width:11em;"><div style="display: inline-block; line-height: 1.2em; padding: .1em 0;"><a href="/wiki/Minor-planet_designation" title="Minor-planet designation">MPC designation</a></div></th><td class="infobox-data">(65803) Didymos</td></tr><tr><th scope="row" class="infobox-label" style="max-width:11em;">Pronunciation</th><td class="infobox-data"><a href="/wiki/Help:IPA/English" title="Help:IPA/English">/ˈdɪdɪmɒs/</a><a href="#cite_note-2">[2]</a></td></tr><tr><th scope="row" class="infobox-label" style="max-width:11em;"><div style="display: inline-block; line-height: 1.2em; padding: .1em 0;">Named after</div></th><td class="infobox-data">Greek word for "<a href="/wiki/Twin" title="Twin">Twin</a>"<a href="#cite_note-springer-3">[3]</a></td></tr><tr><th scope="row" class="infobox-label" style="max-width:11em;"><div style="display: inline-block; line-height: 1.2em; padding: .1em 0;"><a href="/wiki/Provisional_designation_in_astronomy" title="Provisional designation in astronomy">Alternative designations</a></div></th><td class="infobox-data">1996 GT</td></tr><tr><th scope="row" class="infobox-label" style="max-width:11em;"><div style="display: inline-block; line-height: 1.2em; padding: .1em 0;"><a href="/wiki/Minor_planet#Populations" title="Minor planet">Minor planet category</a></div></th><td class="infobox-data"><a href="/wiki/Near-Earth_object" title="Near-Earth object">NEO</a> · <a href="/wiki/Potentially_hazardous_object" title="Potentially hazardous object">PHA</a> <a href="/wiki/Apollo_asteroid" title="Apollo asteroid">Apollo</a> (2022) <a href="#cite_note-jpldata-1">[1]</a><a href="#cite_note-Apollo-4">[a]</a></td></tr><tr><th colspan="2" class="infobox-header" style="background-color:#FFC2E0"><a href="/wiki/Osculating_orbit" title="Osculating orbit">Orbital characteristics</a> <a href="#cite_note-jpldata-1">[1]</a></th></tr><tr><td colspan="2" class="infobox-full-data"><a href="/wiki/Epoch_(astronomy)" title="Epoch (astronomy)">Epoch</a> 21 January 2022 (<a href="/wiki/Julian_day" title="Julian day">JD</a> 2459600.5)</td></tr><tr><td colspan="2" class="infobox-full-data"><a href="/wiki/Uncertainty_parameter" title="Uncertainty parameter">Uncertainty parameter</a> 0</td></tr><tr><th scope="row" class="infobox-label" style="max-width:11em;"><a href="/wiki/Observation_arc" title="Observation arc">Observation arc</a></th><td class="infobox-data">24.82 years (9,066 days)</td></tr><tr><th scope="row" class="infobox-label" style="max-width:11em;"><a href="/wiki/Perihelion_and_aphelion" class="mw-redirect" title="Perihelion and aphelion">Aphelion</a></th><td class="infobox-data">2.2753 <a href="/wiki/Astronomical_unit" title="Astronomical unit">AU</a></td></tr><tr><th scope="row" class="infobox-label" style="max-width:11em;"><a href="/wiki/Perihelion_and_aphelion" class="mw-redirect" title="Perihelion and aphelion">Perihelion</a></th><td class="infobox-data">1.0131 AU</td></tr><tr><th scope="row" class="infobox-label" style="max-width:11em;"><div style="display: inline-block; line-height: 1.2em; padding: .1em 0;"><a href="/wiki/Semi-major_and_semi-minor_axes" title="Semi-major and semi-minor axes">Semi-major axis</a></div></th><td class="infobox-data">1.6442 AU</td></tr><tr><th scope="row" class="infobox-label" style="max-width:11em;"><a href="/wiki/Orbital_eccentricity" title="Orbital eccentricity">Eccentricity</a></th><td class="infobox-data">0.38385</td></tr><tr><th scope="row" class="infobox-label" style="max-width:11em;"><div style="display: inline-block; line-height: 1.2em; padding: .1em 0;"><a href="/wiki/Orbital_period" title="Orbital period">Orbital period (sidereal)</a></div></th><td class="infobox-data">2.11 <a href="/wiki/Julian_year_(astronomy)" title="Julian year (astronomy)">yr</a> (770 days)</td></tr><tr><th scope="row" class="infobox-label" style="max-width:11em;"><div style="display: inline-block; line-height: 1.2em; padding: .1em 0;"><a href="/wiki/Mean_anomaly#Mean_anomaly_at_epoch" title="Mean anomaly">Mean anomaly</a></div></th><td class="infobox-data">232.01</td></tr><tr><th scope="row" class="infobox-label" style="max-width:11em;"><div style="display: inline-block; line-height: 1.2em; padding: .1em 0;"><a href="/wiki/Mean_motion" title="Mean motion">Mean motion</a></div></th><td class="infobox-data">0° 28m 2.28s / day</td></tr><tr><th scope="row" class="infobox-label" style="max-width:11em;"><a href="/wiki/Orbital_inclination" title="Orbital inclination">Inclination</a></th><td class="infobox-data">3.4079°</td></tr><tr><th scope="row" class="infobox-label" style="max-width:11em;"><div style="display: inline-block; line-height: 1.2em; padding: .1em 0;"><a href="/wiki/Longitude_of_the_ascending_node" title="Longitude of the ascending node">Longitude of ascending node</a></div></th><td class="infobox-data">73.196°</td></tr><tr><th scope="row" class="infobox-label" style="max-width:11em;"><div style="display: inline-block; line-height: 1.2em; padding: .1em 0;"><a href="/wiki/Argument_of_periapsis" title="Argument of periapsis">Argument of perihelion</a></div></th><td class="infobox-data">319.32°</td></tr><tr><th scope="row" class="infobox-label" style="max-width:11em;">Known <a href="/wiki/Natural_satellite" title="Natural satellite">satellites</a></th><td class="infobox-data">1 (<a href="/wiki/Dimorphos" title="Dimorphos">Dimorphos</a>)</td></tr><tr><th scope="row" class="infobox-label" style="max-width:11em;">Earth <a href="/wiki/Minimum_orbit_intersection_distance" title="Minimum orbit intersection distance">MOID</a></th><td class="infobox-data">0.0403 AU (15.7 <a href="/wiki/Lunar_distance_(astronomy)" class="mw-redirect" title="Lunar distance (astronomy)">LD</a>)</td></tr><tr><th scope="row" class="infobox-label" style="max-width:11em;">Mars <a href="/wiki/Minimum_orbit_intersection_distance" title="Minimum orbit intersection distance">MOID</a></th><td class="infobox-data">0.02 AU (7.8 LD)<a href="#cite_note-MPC-Didymos-5">[4]</a></td></tr><tr><th colspan="2" class="infobox-header" style="background-color:#FFC2E0"><a href="/wiki/Standard_asteroid_physical_characteristics" title="Standard asteroid physical characteristics">Physical characteristics</a><a href="#cite_note-Cheng2023-6">[5]</a></th></tr><tr><th scope="row" class="infobox-label" style="max-width:11em;"><a href="/wiki/Mean_radius_(astronomy)" title="Mean radius (astronomy)">Dimensions</a></th><td class="infobox-data">851 × 849 × 620 m (± 15 × 15 × 15 m)</td></tr><tr><th scope="row" class="infobox-label" style="max-width:11em;"><div style="display: inline-block; line-height: 1.2em; padding: .1em 0;"><a href="/wiki/Mean_radius_(astronomy)" title="Mean radius (astronomy)">Mean diameter</a></div></th><td class="infobox-data">765±15 m<a href="#cite_note-diameter-7">[b]</a></td></tr><tr><th scope="row" class="infobox-label" style="max-width:11em;"><a href="/wiki/Mass" title="Mass">Mass</a></th><td class="infobox-data">(5.4±0.4)×1011 kg (system)<a href="#cite_note-Naidu2020-8">[6]</a> ≈ 5.2×1011 kg (primary)<a href="#cite_note-Nakano2022-9">[7]</a></td></tr><tr><th scope="row" class="infobox-label" style="max-width:11em;"><div style="display: inline-block; line-height: 1.2em; padding: .1em 0;">Mean <a href="/wiki/Density" title="Density">density</a></div></th><td class="infobox-data">2.40±0.30 g/cm3<a href="#cite_note-Cheng2023-6">[5]</a></td></tr><tr><th scope="row" class="infobox-label" style="max-width:11em;"><div style="display: inline-block; line-height: 1.2em; padding: .1em 0;"><a href="/wiki/Synodic_rotation_period" class="mw-redirect" title="Synodic rotation period">Synodic rotation period</a></div></th><td class="infobox-data">2.2600±0.0001<a href="#cite_note-Naidu2020-8">[6]</a> 2.2593±0.0002 <a href="/wiki/Hour" title="Hour">h</a><a href="#cite_note-Pravec-2006-10">[8]</a></td></tr><tr><th scope="row" class="infobox-label" style="max-width:11em;"><div style="display: inline-block; line-height: 1.2em; padding: .1em 0;"><a href="/wiki/Axial_tilt" title="Axial tilt">Axial tilt</a></div></th><td class="infobox-data">174°±20°<a href="#cite_note-pole-12">[c]</a></td></tr><tr><th scope="row" class="infobox-label" style="max-width:11em;"><div style="display: inline-block; line-height: 1.2em; padding: .1em 0;">Pole <a href="/wiki/Ecliptic_coordinate_system" title="Ecliptic coordinate system">ecliptic latitude</a></div></th><td class="infobox-data">−84°±20°</td></tr><tr><th scope="row" class="infobox-label" style="max-width:11em;"><div style="display: inline-block; line-height: 1.2em; padding: .1em 0;">Pole <a href="/wiki/Ecliptic_coordinate_system" title="Ecliptic coordinate system">ecliptic longitude</a></div></th><td class="infobox-data">310°±20°</td></tr><tr><th scope="row" class="infobox-label" style="max-width:11em;"><div style="display: inline-block; line-height: 1.2em; padding: .1em 0;"><a href="/wiki/Geometric_albedo" title="Geometric albedo">Geometric albedo</a></div></th><td class="infobox-data">0.15±0.04</td></tr><tr><th scope="row" class="infobox-label" style="max-width:11em;"><div style="display: inline-block; line-height: 1.2em; padding: .1em 0;"><a href="/wiki/Asteroid_spectral_types" title="Asteroid spectral types">Spectral type</a></div></th><td class="infobox-data"><a href="/wiki/S-type_asteroid" title="S-type asteroid">S</a><a href="#cite_note-Naidu2020-8">[6]</a><a href="#cite_note-Scheirich2022-13">[10]</a> · <a href="/wiki/SMASS_classification" class="mw-redirect" title="SMASS classification">SMASS</a> = <a href="/wiki/X-type_asteroid" title="X-type asteroid">X</a><a href="/wiki/K-type_asteroid" title="K-type asteroid">k</a><a href="#cite_note-jpldata-1">[1]</a> · <a href="/wiki/X-type_asteroid" title="X-type asteroid">X</a><a href="#cite_note-lcdb-14">[11]</a></td></tr><tr><th scope="row" class="infobox-label" style="max-width:11em;"><div style="display: inline-block; line-height: 1.2em; padding: .1em 0;"><a href="/wiki/Absolute_magnitude#Solar_System_bodies_(H)" title="Absolute magnitude">Absolute magnitude (H)</a></div></th><td class="infobox-data">18.0<a href="#cite_note-jpldata-1">[1]</a> · 18.16<a href="#cite_note-lcdb-14">[11]</a><a href="#cite_note-Pravec-2006-10">[8]</a><a href="#cite_note-Kitazato-2004-15">[12]</a> 18.16±0.03<a href="#cite_note-Pravec-2012b-16">[13]</a></td></tr><tr><td colspan="2" class="infobox-below"><style data-mw-deduplicate="TemplateStyles:r1239543626">.mw-parser-output .reflist{margin-bottom:0.5em;list-style-type:decimal}@media screen{.mw-parser-output .reflist{font-size:90%}}.mw-parser-output .reflist .references{font-size:100%;margin-bottom:0;list-style-type:inherit}.mw-parser-output .reflist-columns-2{column-width:30em}.mw-parser-output .reflist-columns-3{column-width:25em}.mw-parser-output .reflist-columns{margin-top:0.3em}.mw-parser-output .reflist-columns ol{margin-top:0}.mw-parser-output .reflist-columns li{page-break-inside:avoid;break-inside:avoid-column}.mw-parser-output .reflist-upper-alpha{list-style-type:upper-alpha}.mw-parser-output .reflist-upper-roman{list-style-type:upper-roman}.mw-parser-output .reflist-lower-alpha{list-style-type:lower-alpha}.mw-parser-output .reflist-lower-greek{list-style-type:lower-greek}.mw-parser-output .reflist-lower-roman{list-style-type:lower-roman}</style><div class="reflist"> </div></td></tr></tbody></table> Didymos's moon, <a href="/wiki/Dimorphos" title="Dimorphos">Dimorphos</a>, was the target of the <a href="/wiki/Double_Asteroid_Redirection_Test" title="Double Asteroid Redirection Test">DART</a> mission to test the viability of <a href="/wiki/Asteroid_impact_avoidance" title="Asteroid impact avoidance">asteroid impact avoidance</a> by collision with a spacecraft, while the impact was witnessed by <a href="/wiki/LICIACube" title="LICIACube">LICIACube</a>, a flyby <a href="/wiki/CubeSat" title="CubeSat">CubeSat</a> component of the mission. <div id="toc" class="toc" role="navigation" aria-labelledby="mw-toc-heading"><input type="checkbox" role="button" id="toctogglecheckbox" class="toctogglecheckbox" style="display:none"><div class="toctitle" lang="en" dir="ltr"><h2 id="mw-toc-heading">Contents</h2><label class="toctogglelabel" for="toctogglecheckbox"></label></div> <ul> <li class="toclevel-1 tocsection-1"><a href="#Discovery">1 Discovery</a></li> <li class="toclevel-1 tocsection-2"><a href="#Orbital_characteristics">2 Orbital characteristics</a></li> <li class="toclevel-1 tocsection-3"><a href="#Physical_characteristics">3 Physical characteristics</a> <ul> <li class="toclevel-2 tocsection-4"><a href="#Satellite">3.1 Satellite</a></li> </ul> </li> <li class="toclevel-1 tocsection-5"><a href="#Naming">4 Naming</a></li> <li class="toclevel-1 tocsection-6"><a href="#Exploration">5 Exploration</a></li> <li class="toclevel-1 tocsection-7"><a href="#See_also">6 See also</a></li> <li class="toclevel-1 tocsection-8"><a href="#Notes">7 Notes</a></li> <li class="toclevel-1 tocsection-9"><a href="#References">8 References</a></li> <li class="toclevel-1 tocsection-10"><a href="#External_links">9 External links</a></li> </ul> </div> </section><div class="mw-heading mw-heading2 section-heading" onclick="mfTempOpenSection(1)"><h2 id="Discovery">Discovery</h2> <a role="button" href="/w/index.php?title=65803_Didymos&action=edit&section=1" title="Edit section: Discovery" class="cdx-button cdx-button--size-large cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--icon-only cdx-button--weight-quiet "> edit </a> </div><section class="mf-section-1 collapsible-block" id="mf-section-1"> <figure class="mw-default-size mw-halign-left" typeof="mw:File/Thumb"><a href="/wiki/File:Didymos-Arecibo-radar-images.png" class="mw-file-description"><noscript><img src="//upload.wikimedia.org/wikipedia/commons/thumb/4/4c/Didymos-Arecibo-radar-images.png/220px-Didymos-Arecibo-radar-images.png" decoding="async" width="220" height="183" class="mw-file-element" data-file-width="827" data-file-height="687"></noscript><span class="lazy-image-placeholder" style="width: 220px;height: 183px;" data-src="//upload.wikimedia.org/wikipedia/commons/thumb/4/4c/Didymos-Arecibo-radar-images.png/220px-Didymos-Arecibo-radar-images.png" data-width="220" data-height="183" data-srcset="//upload.wikimedia.org/wikipedia/commons/thumb/4/4c/Didymos-Arecibo-radar-images.png/330px-Didymos-Arecibo-radar-images.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/4/4c/Didymos-Arecibo-radar-images.png/440px-Didymos-Arecibo-radar-images.png 2x" data-class="mw-file-element"> </a><figcaption>Radar images of Didymos and its satellite <a href="/wiki/Dimorphos" title="Dimorphos">Dimorphos</a>, taken by the <a href="/wiki/Arecibo_Observatory" title="Arecibo Observatory">Arecibo Observatory</a> in 2003</figcaption></figure> Didymos was discovered on 11 April 1996 by the <a href="/wiki/University_of_Arizona" title="University of Arizona">University of Arizona</a> <a href="/wiki/Steward_Observatory" title="Steward Observatory">Steward Observatory</a>'s, and <a href="/wiki/Lunar_and_Planetary_Laboratory" title="Lunar and Planetary Laboratory">Lunar and Planetary Laboratory</a>'s, <a href="/wiki/Spacewatch" title="Spacewatch">Spacewatch</a> survey using its 0.9-meter telescope at <a href="/wiki/Kitt_Peak_National_Observatory" title="Kitt Peak National Observatory">Kitt Peak National Observatory</a> in Arizona, United States. The binary nature of the asteroid was discovered by others; suspicions of binarity first arose in <a href="/wiki/Goldstone_Deep_Space_Communications_Complex" title="Goldstone Deep Space Communications Complex">Goldstone</a> delay-<a href="/wiki/Doppler_radar" title="Doppler radar">Doppler</a> echoes, and these were confirmed with an optical <a href="/wiki/Lightcurve" class="mw-redirect" title="Lightcurve">lightcurve</a> analysis, along with <a href="/wiki/Arecibo_Observatory" title="Arecibo Observatory">Arecibo</a> radar imaging on 23 November 2003.<a href="#cite_note-MPC-Didymos-5">[4]</a> </section><div class="mw-heading mw-heading2 section-heading" onclick="mfTempOpenSection(2)"><h2 id="Orbital_characteristics">Orbital characteristics</h2> <a role="button" href="/w/index.php?title=65803_Didymos&action=edit&section=2" title="Edit section: Orbital characteristics" class="cdx-button cdx-button--size-large cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--icon-only cdx-button--weight-quiet "> edit </a> </div><section class="mf-section-2 collapsible-block" id="mf-section-2"> Didymos orbits the Sun at a distance of 1.0–2.3 <a href="/wiki/Astronomical_unit" title="Astronomical unit">AU</a> once every 770 days (2 years and 1 month). Its orbit has an <a href="/wiki/Orbital_eccentricity" title="Orbital eccentricity">eccentricity</a> of 0.38 and an <a href="/wiki/Orbital_inclination" title="Orbital inclination">inclination</a> of 3° with respect to the <a href="/wiki/Ecliptic" title="Ecliptic">ecliptic</a>. The minimum distance between the orbit of Earth and the orbit of Didymos is currently 0.04 <a href="/wiki/Astronomical_unit" title="Astronomical unit">AU</a> (6.0 million <a href="/wiki/Kilometre" title="Kilometre">km</a>),<a href="#cite_note-jpldata-1">[1]</a> but will change as the asteroid is <a href="/wiki/Perturbation_(astronomy)" title="Perturbation (astronomy)">perturbed</a>. In November 2003 it passed 7.18 million km from Earth; it will not come that near again until November 2123, with a distance of 5.86 million km. Didymos also occasionally passes very close to Mars: it will fly by Mars at a distance of 4.68 million km in July 2144.<a href="#cite_note-jpldata-1">[1]</a> Even the Earth approach of October 2184 is still listed with an uncertainty region of roughly ±1343 km.<a href="#cite_note-Horizons2184-17">[14]</a> Didymos spends 1/3 of its time orbiting in the <a href="/wiki/Near-Earth_asteroid" class="mw-redirect" title="Near-Earth asteroid">near-Earth asteroid</a> (NEA) region where impacts are more probable. This means that about every 73–84 thousand years, an object impacts Didymos with the energy of the <a href="/wiki/DART_(satellite)" title="DART (satellite)">DART mission satellite</a>. Over its median NEA lifetime of 8 to 10 million years, Didymos probably has been impacted tens of times.<a href="#cite_note-18">[15]</a> </section><div class="mw-heading mw-heading2 section-heading" onclick="mfTempOpenSection(3)"><h2 id="Physical_characteristics">Physical characteristics</h2> <a role="button" href="/w/index.php?title=65803_Didymos&action=edit&section=3" title="Edit section: Physical characteristics" class="cdx-button cdx-button--size-large cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--icon-only cdx-button--weight-quiet "> edit </a> </div><section class="mf-section-3 collapsible-block" id="mf-section-3"> <figure class="mw-default-size mw-halign-left" typeof="mw:File/Thumb"><a href="/wiki/File:Aftermath_of_DART_Collision_with_Dimorphos_Captured_by_SOAR_Telescope_(noirlab2223a).jpg" class="mw-file-description"><noscript><img src="//upload.wikimedia.org/wikipedia/commons/thumb/9/90/Aftermath_of_DART_Collision_with_Dimorphos_Captured_by_SOAR_Telescope_%28noirlab2223a%29.jpg/220px-Aftermath_of_DART_Collision_with_Dimorphos_Captured_by_SOAR_Telescope_%28noirlab2223a%29.jpg" decoding="async" width="220" height="147" class="mw-file-element" data-file-width="2396" data-file-height="1606"></noscript><span class="lazy-image-placeholder" style="width: 220px;height: 147px;" data-src="//upload.wikimedia.org/wikipedia/commons/thumb/9/90/Aftermath_of_DART_Collision_with_Dimorphos_Captured_by_SOAR_Telescope_%28noirlab2223a%29.jpg/220px-Aftermath_of_DART_Collision_with_Dimorphos_Captured_by_SOAR_Telescope_%28noirlab2223a%29.jpg" data-width="220" data-height="147" data-srcset="//upload.wikimedia.org/wikipedia/commons/thumb/9/90/Aftermath_of_DART_Collision_with_Dimorphos_Captured_by_SOAR_Telescope_%28noirlab2223a%29.jpg/330px-Aftermath_of_DART_Collision_with_Dimorphos_Captured_by_SOAR_Telescope_%28noirlab2223a%29.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/9/90/Aftermath_of_DART_Collision_with_Dimorphos_Captured_by_SOAR_Telescope_%28noirlab2223a%29.jpg/440px-Aftermath_of_DART_Collision_with_Dimorphos_Captured_by_SOAR_Telescope_%28noirlab2223a%29.jpg 2x" data-class="mw-file-element"> </a><figcaption>Dust ejecta and tail of Didymos imaged in color by the <a href="/wiki/Southern_Astrophysical_Research_Telescope" title="Southern Astrophysical Research Telescope">Southern Astrophysical Research Telescope</a> two days after DART's impact</figcaption></figure> <figure class="mw-default-size mw-halign-left" typeof="mw:File/Thumb"><a href="/wiki/File:Hubble_view_of_Dimorphos_ejecta_(October_8).png" class="mw-file-description"><noscript><img src="//upload.wikimedia.org/wikipedia/commons/thumb/b/b0/Hubble_view_of_Dimorphos_ejecta_%28October_8%29.png/220px-Hubble_view_of_Dimorphos_ejecta_%28October_8%29.png" decoding="async" width="220" height="203" class="mw-file-element" data-file-width="1181" data-file-height="1091"></noscript><span class="lazy-image-placeholder" style="width: 220px;height: 203px;" data-src="//upload.wikimedia.org/wikipedia/commons/thumb/b/b0/Hubble_view_of_Dimorphos_ejecta_%28October_8%29.png/220px-Hubble_view_of_Dimorphos_ejecta_%28October_8%29.png" data-width="220" data-height="203" data-srcset="//upload.wikimedia.org/wikipedia/commons/thumb/b/b0/Hubble_view_of_Dimorphos_ejecta_%28October_8%29.png/330px-Hubble_view_of_Dimorphos_ejecta_%28October_8%29.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/b/b0/Hubble_view_of_Dimorphos_ejecta_%28October_8%29.png/440px-Hubble_view_of_Dimorphos_ejecta_%28October_8%29.png 2x" data-class="mw-file-element"> </a><figcaption>Double tail of Didymos imaged by the <a href="/wiki/Hubble_Space_Telescope" title="Hubble Space Telescope">Hubble Space Telescope</a> 12 days after DART's impact</figcaption></figure> In the <a href="/wiki/SMASS_classification" class="mw-redirect" title="SMASS classification">SMASS classification</a>, Didymos was classified as an Xk-type asteroid, which transitions from the <a href="/wiki/X-type_asteroid" title="X-type asteroid">X-type</a> to the rare <a href="/wiki/K-type_asteroid" title="K-type asteroid">K-type asteroids</a>.<a href="#cite_note-jpldata-1">[1]</a> Subsequent visible and near-infrared spectroscopy showed it to be silicate in nature, which also qualifies it as a stony <a href="/wiki/S-type_asteroid" title="S-type asteroid">S-type asteroid</a>.<a href="#cite_note-deLeon-2010-19">[16]</a> It <a href="/wiki/Rotation_period" class="mw-redirect" title="Rotation period">rotates</a> rapidly, with a period of 2.26 hours and a low brightness variation of 0.08 <a href="/wiki/Magnitude_(astronomy)" title="Magnitude (astronomy)">magnitude</a> (<a href="/wiki/LCDB_quality_code" class="mw-redirect" title="LCDB quality code">U=3/3</a>), which indicates that the body has a nearly spheroidal shape.<a href="#cite_note-lcdb-14">[11]</a><a href="#cite_note-Pravec-2006-10">[8]</a><a href="#cite_note-Pravec-2003c-20">[17]</a> Radar observations confirmed this spheroidal shape, showing it to be <a href="/wiki/Oblate_spheroid" class="mw-redirect" title="Oblate spheroid">oblate</a> due to its rapid rotation.<a href="#cite_note-Naidu2020-8">[6]</a> <div class="mw-heading mw-heading3"><h3 id="Satellite">Satellite</h3> <a role="button" href="/w/index.php?title=65803_Didymos&action=edit&section=4" title="Edit section: Satellite" class="cdx-button cdx-button--size-large cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--icon-only cdx-button--weight-quiet "> edit </a> </div> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236090951"><div role="note" class="hatnote navigation-not-searchable">Main article: <a href="/wiki/Dimorphos" title="Dimorphos">Dimorphos</a></div> Didymos is a <a href="/wiki/Binary_asteroid" title="Binary asteroid">binary asteroid</a> with a satellite in its orbit. The <a href="/wiki/Minor-planet_moon" title="Minor-planet moon">minor-planet moon</a>, named <a href="/wiki/Dimorphos" title="Dimorphos">Dimorphos</a>,<a href="#cite_note-Talbert2020-21">[18]</a> moves in a mostly circular <a href="/wiki/Retrograde_orbit" class="mw-redirect" title="Retrograde orbit">retrograde orbit</a><a href="#cite_note-22">[19]</a> with an <a href="/wiki/Orbital_period" title="Orbital period">orbital period</a> of 11.9 hours.<a href="#cite_note-lcdb-14">[11]</a><a href="#cite_note-lightcurve-plot-PDO-23">[d]</a> It measures approximately 160 meters (520 ft) in diameter compared to 780 meters (2,560 ft) for its primary (a <a href="/wiki/Mean_diameter" class="mw-redirect" title="Mean diameter">mean diameter</a>-ratio of 0.22).<a href="#cite_note-johnstonsarchive-24">[20]</a> It was previously known by its <a href="/wiki/Provisional_designation" class="mw-redirect" title="Provisional designation">provisional designation</a> S/2003 (65803) 1 and had been informally called "Didymoon" or "Didymos B".<a href="#cite_note-25">[21]</a><a href="#cite_note-Talbert2020-21">[18]</a> </section><div class="mw-heading mw-heading2 section-heading" onclick="mfTempOpenSection(4)"><h2 id="Naming">Naming</h2> <a role="button" href="/w/index.php?title=65803_Didymos&action=edit&section=5" title="Edit section: Naming" class="cdx-button cdx-button--size-large cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--icon-only cdx-button--weight-quiet "> edit </a> </div><section class="mf-section-4 collapsible-block" id="mf-section-4"> This <a href="/wiki/Minor_planet" title="Minor planet">minor planet</a> was named "Didymos", Greek for "twin", due to its binary nature.<a href="#cite_note-springer-3">[3]</a> The name was suggested by the discoverer, <a href="/wiki/University_of_Arizona" title="University of Arizona">University of Arizona</a> <a href="/wiki/Lunar_and_Planetary_Laboratory" title="Lunar and Planetary Laboratory">Lunar and Planetary Laboratory</a> astronomer <a href="/wiki/Joseph_Montani" class="mw-redirect" title="Joseph Montani">Joseph L. "Joe" Montani</a>, who made the naming proposal to the <a href="/wiki/International_Astronomical_Union" title="International Astronomical Union">International Astronomical Union</a> after the binary nature of the object was detected. The approved naming citation was published on 13 July 2004 (<a href="/wiki/Minor_Planet_Circulars" class="mw-redirect" title="Minor Planet Circulars">M.P.C.</a> 52326).<a href="#cite_note-MPC-Circulars-Archive-26">[22]</a> The proper name for the satellite <a href="/wiki/Dimorphos" title="Dimorphos">Didymos B</a> comes from the word "Dimorphos", Greek for "having two forms".<a href="#cite_note-MPEC-2020-M83-27">[23]</a> The meaning of the name represents how the form of Dimorphos's orbit will change after the collision with NASA’s Double Asteroid Redirection Test (DART) spacecraft,<a href="#cite_note-Talbert2020-21">[18]</a> though in fact the change will be only a very slight change in its orbital parameters. Appropriately, Dimorphos serves dual roles as both a test target and as a part of a blueprint for a modality for future planetary protection.<a href="#cite_note-Talbert2020-21">[18]</a> The name of the moon was suggested by planetary scientist <a href="/wiki/Kleomenis_Tsiganis" class="mw-redirect" title="Kleomenis Tsiganis">Kleomenis Tsiganis</a> at the <a href="/wiki/Aristotle_University_of_Thessaloniki" title="Aristotle University of Thessaloniki">Aristotle University of Thessaloniki</a>, Greece.<a href="#cite_note-iau2007-28">[24]</a> Two boulders (saxa) have been given names of traditional drums.<a href="#cite_note-features-29">[25]</a> <table class="wikitable" style="margin-left: auto; margin-right: auto; border: none;"> <caption>Named features </caption> <tbody><tr> <th>Name </th> <th>Pronunciation</th> <th>Feature</th> <th>Named after</th> <th>Date approved<a href="#cite_note-features-29">[25]</a> </th></tr> <tr> <td>Carillon Saxum </td> <td><style data-mw-deduplicate="TemplateStyles:r1177148991">.mw-parser-output .IPA-label-small{font-size:85%}.mw-parser-output .references .IPA-label-small,.mw-parser-output .infobox .IPA-label-small,.mw-parser-output .navbox .IPA-label-small{font-size:100%}</style><a href="/wiki/American_English" title="American English">US</a>: <a href="/wiki/Help:IPA/English" title="Help:IPA/English">/ˈkærəlɒn/</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1177148991"><a href="/wiki/British_English" title="British English">UK</a>: <a href="/wiki/Help:IPA/English" title="Help:IPA/English">/kəˈrɪljən/</a></td> <td>boulder</td> <td><a href="/wiki/Carillon" title="Carillon">carillon</a></td> <td>14 Nov 2023 </td></tr> <tr> <td>Gong Saxum </td> <td><a href="/wiki/Help:IPA/English" title="Help:IPA/English">/ˈɡɒŋ/</a></td> <td>boulder</td> <td><a href="/wiki/Gong" title="Gong">gong</a></td> <td>14 Nov 2023 </td></tr></tbody></table> </section><div class="mw-heading mw-heading2 section-heading" onclick="mfTempOpenSection(5)"><h2 id="Exploration">Exploration</h2> <a role="button" href="/w/index.php?title=65803_Didymos&action=edit&section=6" title="Edit section: Exploration" class="cdx-button cdx-button--size-large cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--icon-only cdx-button--weight-quiet "> edit </a> </div><section class="mf-section-5 collapsible-block" id="mf-section-5"> <figure class="mw-default-size mw-halign-left" typeof="mw:File/Thumb"><a href="/wiki/File:Asteroid_(65803)_Didymos.jpg" class="mw-file-description"><noscript><img src="//upload.wikimedia.org/wikipedia/commons/thumb/2/2a/Asteroid_%2865803%29_Didymos.jpg/220px-Asteroid_%2865803%29_Didymos.jpg" decoding="async" width="220" height="118" class="mw-file-element" data-file-width="1496" data-file-height="805"></noscript><span class="lazy-image-placeholder" style="width: 220px;height: 118px;" data-src="//upload.wikimedia.org/wikipedia/commons/thumb/2/2a/Asteroid_%2865803%29_Didymos.jpg/220px-Asteroid_%2865803%29_Didymos.jpg" data-width="220" data-height="118" data-srcset="//upload.wikimedia.org/wikipedia/commons/thumb/2/2a/Asteroid_%2865803%29_Didymos.jpg/330px-Asteroid_%2865803%29_Didymos.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/2/2a/Asteroid_%2865803%29_Didymos.jpg/440px-Asteroid_%2865803%29_Didymos.jpg 2x" data-class="mw-file-element"> </a><figcaption>Telescope image of Didymos before DART's impact</figcaption></figure> <figure class="mw-default-size mw-halign-right" typeof="mw:File/Thumb"><a href="/wiki/File:Dart_header_2_(1).jpg" class="mw-file-description"><noscript><img src="//upload.wikimedia.org/wikipedia/commons/thumb/0/0a/Dart_header_2_%281%29.jpg/220px-Dart_header_2_%281%29.jpg" decoding="async" width="220" height="124" class="mw-file-element" data-file-width="4800" data-file-height="2700"></noscript><span class="lazy-image-placeholder" style="width: 220px;height: 124px;" data-src="//upload.wikimedia.org/wikipedia/commons/thumb/0/0a/Dart_header_2_%281%29.jpg/220px-Dart_header_2_%281%29.jpg" data-width="220" data-height="124" data-srcset="//upload.wikimedia.org/wikipedia/commons/thumb/0/0a/Dart_header_2_%281%29.jpg/330px-Dart_header_2_%281%29.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/0/0a/Dart_header_2_%281%29.jpg/440px-Dart_header_2_%281%29.jpg 2x" data-class="mw-file-element"> </a><figcaption>Artist's impression of the <a href="/wiki/Double_Asteroid_Redirection_Test" title="Double Asteroid Redirection Test">DART</a> spacecraft</figcaption></figure> <figure class="mw-default-size mw-halign-left" typeof="mw:File/Thumb"><a href="/wiki/File:DART-impact-SAAO-Lesedi-Mookodi.gif" class="mw-file-description"><noscript><img src="//upload.wikimedia.org/wikipedia/commons/thumb/1/19/DART-impact-SAAO-Lesedi-Mookodi.gif/220px-DART-impact-SAAO-Lesedi-Mookodi.gif" decoding="async" width="220" height="220" class="mw-file-element" data-file-width="234" data-file-height="234"></noscript><span class="lazy-image-placeholder" style="width: 220px;height: 220px;" data-src="//upload.wikimedia.org/wikipedia/commons/thumb/1/19/DART-impact-SAAO-Lesedi-Mookodi.gif/220px-DART-impact-SAAO-Lesedi-Mookodi.gif" data-width="220" data-height="220" data-srcset="//upload.wikimedia.org/wikipedia/commons/1/19/DART-impact-SAAO-Lesedi-Mookodi.gif 1.5x" data-class="mw-file-element"> </a><figcaption>Timelapse of the Didymos system's expanding dust plume from the DART impact, as seen by the <a href="/wiki/South_African_Astronomical_Observatory" title="South African Astronomical Observatory">South African Astronomical Observatory</a>'s 1-meter Lesedi telescope</figcaption></figure> <figure class="mw-default-size mw-halign-right" typeof="mw:File/Thumb"><a href="/wiki/File:Animation_of_DART_trajectory_around_Sun.gif" class="mw-file-description"><noscript><img src="//upload.wikimedia.org/wikipedia/commons/thumb/6/60/Animation_of_DART_trajectory_around_Sun.gif/220px-Animation_of_DART_trajectory_around_Sun.gif" decoding="async" width="220" height="165" class="mw-file-element" data-file-width="560" data-file-height="420"></noscript><span class="lazy-image-placeholder" style="width: 220px;height: 165px;" data-src="//upload.wikimedia.org/wikipedia/commons/thumb/6/60/Animation_of_DART_trajectory_around_Sun.gif/220px-Animation_of_DART_trajectory_around_Sun.gif" data-width="220" data-height="165" data-srcset="//upload.wikimedia.org/wikipedia/commons/thumb/6/60/Animation_of_DART_trajectory_around_Sun.gif/330px-Animation_of_DART_trajectory_around_Sun.gif 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/6/60/Animation_of_DART_trajectory_around_Sun.gif/440px-Animation_of_DART_trajectory_around_Sun.gif 2x" data-class="mw-file-element"> </a><figcaption>Animation of DART's trajectory <style data-mw-deduplicate="TemplateStyles:r981673959">.mw-parser-output .legend{page-break-inside:avoid;break-inside:avoid-column}.mw-parser-output .legend-color{display:inline-block;min-width:1.25em;height:1.25em;line-height:1.25;margin:1px 0;text-align:center;border:1px solid black;background-color:transparent;color:black}.mw-parser-output .legend-text{}</style> <a href="/wiki/Double_Asteroid_Redirection_Test" title="Double Asteroid Redirection Test">DART</a> · <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r981673959"> 65803 Didymos · <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r981673959"> <a href="/wiki/Earth" title="Earth">Earth</a> · <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r981673959"> <a href="/wiki/Sun" title="Sun">Sun</a> · <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r981673959"> 2001 CB21 · <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r981673959"> <a href="/wiki/3361_Orpheus" title="3361 Orpheus">3361 Orpheus</a></figcaption></figure> <figure class="mw-default-size mw-halign-right" typeof="mw:File/Thumb"><a href="/wiki/File:Animation_of_DART_around_Didymos_-_Impact_on_Dimorphos.gif" class="mw-file-description"><noscript><img src="//upload.wikimedia.org/wikipedia/commons/thumb/5/51/Animation_of_DART_around_Didymos_-_Impact_on_Dimorphos.gif/220px-Animation_of_DART_around_Didymos_-_Impact_on_Dimorphos.gif" decoding="async" width="220" height="165" class="mw-file-element" data-file-width="560" data-file-height="420"></noscript><span class="lazy-image-placeholder" style="width: 220px;height: 165px;" data-src="//upload.wikimedia.org/wikipedia/commons/thumb/5/51/Animation_of_DART_around_Didymos_-_Impact_on_Dimorphos.gif/220px-Animation_of_DART_around_Didymos_-_Impact_on_Dimorphos.gif" data-width="220" data-height="165" data-srcset="//upload.wikimedia.org/wikipedia/commons/thumb/5/51/Animation_of_DART_around_Didymos_-_Impact_on_Dimorphos.gif/330px-Animation_of_DART_around_Didymos_-_Impact_on_Dimorphos.gif 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/5/51/Animation_of_DART_around_Didymos_-_Impact_on_Dimorphos.gif/440px-Animation_of_DART_around_Didymos_-_Impact_on_Dimorphos.gif 2x" data-class="mw-file-element"> </a><figcaption>Animation of DART around Didymos - Impact on Dimorphos <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r981673959"> DART · <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r981673959"> Didymos · <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r981673959"> Dimorphos</figcaption></figure> In the early 2010s, Didymos's moon, Dimorphos was to be the principal target of proposed robotic mission by the <a href="/wiki/European_Space_Agency" title="European Space Agency">ESA</a> and <a href="/wiki/NASA" title="NASA">NASA</a>, called the <a href="/wiki/AIDA_(mission)" class="mw-redirect" title="AIDA (mission)">Asteroid Impact & Deflection Assessment (AIDA) mission</a>. The ESA dropped out, and the mission did not proceed.<a href="#cite_note-AIDA-PDF-30">[26]</a><a href="#cite_note-AIDA-mission-31">[27]</a> NASA redefined mission requirements and decided to proceed with a 2020s mission to visit Didymos with an impactor, which had been considered as a part of the earlier AIDA mission, named the <a href="/wiki/Double_Asteroid_Redirection_Test" title="Double Asteroid Redirection Test">Double Asteroid Redirection Test</a> or DART. The NASA mission was intended to test whether a spacecraft impact could successfully deflect an asteroid on a collision course with Earth. The DART spacecraft was launched on 24 November 2021, and impacted Dimorphos on September 26, 2022.<a href="#cite_note-nsf20220922-32">[28]</a><a href="#cite_note-nasa20220907-33">[29]</a><a href="#cite_note-34">[30]</a> It was accompanied by the <a href="/wiki/Italian_Space_Agency" title="Italian Space Agency">Italian Space Agency</a>'s (ASI) six-unit <a href="/wiki/LICIACube" title="LICIACube">LICIACube</a> flyby <a href="/wiki/CubeSat" title="CubeSat">Cubesat</a> that was released 15 days before impact to observe the asteroid and DART's impact.<a href="#cite_note-natgeo20211125-35">[31]</a> DART was the first spacecraft to intentionally target and successfully visit an asteroid known to have a <a href="/wiki/Minor-planet_moon" title="Minor-planet moon">minor-planet moon</a> (The binary asteroid <a href="/wiki/2000_DP107" class="mw-redirect" title="2000 DP107">2000 DP107</a> was targeted by the <a href="/wiki/PROCYON" title="PROCYON">PROCYON</a> mission before it failed, <a href="/wiki/243_Ida" title="243 Ida">243 Ida</a> was visited by the <a href="/wiki/Galileo_spacecraft" class="mw-redirect" title="Galileo spacecraft">Galileo spacecraft</a> but its moon was unknown until then, <a href="/wiki/Pluto" title="Pluto">Pluto</a> was considered a planet until a few months after the launch of <a href="/wiki/New_Horizons" title="New Horizons">New Horizons</a>, and <a href="/wiki/3548_Eurybates" title="3548 Eurybates">3548 Eurybates</a>'s and <a href="/wiki/15094_Polymele" title="15094 Polymele">15094 Polymele</a>'s moons were not discovered until months before and after <a href="/wiki/Lucy_(spacecraft)" title="Lucy (spacecraft)">Lucy</a>'s launch, respectively). Didymos is the most easily reachable asteroid of its size from Earth, requiring a <a href="/wiki/Delta-v" title="Delta-v">delta-v</a> of only 5.1 km/s for a spacecraft to rendezvous, compared to 6.0 km/s to reach the <a href="/wiki/Moon" title="Moon">Moon</a>.<a href="#cite_note-JPL-delta-v-36">[32]</a> After two weeks of analysis, NASA announced that the collision shortened Dimorphos's orbital period around Didymos by 32 minutes,<a href="#cite_note-37">[33]</a> far more than the minimum requirement of 73 seconds and the success benchmark of 10 minutes. The measurement has an uncertainty of ±2 minutes.<a href="#cite_note-NASA22-105-38">[34]</a> <figure class="mw-default-size mw-halign-left" typeof="mw:File/Thumb"><a href="/wiki/File:Two_LICIACube_LUKE_images_showing_the_ejecta_morphology_that_were_used_to_reduce_the_possible_axis_orientation_solutions.webp" class="mw-file-description"><noscript><img src="//upload.wikimedia.org/wikipedia/commons/thumb/d/da/Two_LICIACube_LUKE_images_showing_the_ejecta_morphology_that_were_used_to_reduce_the_possible_axis_orientation_solutions.webp/220px-Two_LICIACube_LUKE_images_showing_the_ejecta_morphology_that_were_used_to_reduce_the_possible_axis_orientation_solutions.webp.png" decoding="async" width="220" height="100" class="mw-file-element" data-file-width="1932" data-file-height="877"></noscript><span class="lazy-image-placeholder" style="width: 220px;height: 100px;" data-src="//upload.wikimedia.org/wikipedia/commons/thumb/d/da/Two_LICIACube_LUKE_images_showing_the_ejecta_morphology_that_were_used_to_reduce_the_possible_axis_orientation_solutions.webp/220px-Two_LICIACube_LUKE_images_showing_the_ejecta_morphology_that_were_used_to_reduce_the_possible_axis_orientation_solutions.webp.png" data-width="220" data-height="100" data-srcset="//upload.wikimedia.org/wikipedia/commons/thumb/d/da/Two_LICIACube_LUKE_images_showing_the_ejecta_morphology_that_were_used_to_reduce_the_possible_axis_orientation_solutions.webp/330px-Two_LICIACube_LUKE_images_showing_the_ejecta_morphology_that_were_used_to_reduce_the_possible_axis_orientation_solutions.webp.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/d/da/Two_LICIACube_LUKE_images_showing_the_ejecta_morphology_that_were_used_to_reduce_the_possible_axis_orientation_solutions.webp/440px-Two_LICIACube_LUKE_images_showing_the_ejecta_morphology_that_were_used_to_reduce_the_possible_axis_orientation_solutions.webp.png 2x" data-class="mw-file-element"> </a><figcaption>Dart Impact seen by LICIACube</figcaption></figure> Another mission to Didymos was approved in November 2019 and launched in October 2024, with the arrival at Didymos being expected in 2026.<a href="#cite_note-39">[35]</a> ESA's <a href="/wiki/Hera_(space_mission)" title="Hera (space mission)">Hera</a> mission is planning to survey the dynamical effects of the DART impact and measure the characteristics of the crater made by DART.<a href="#cite_note-Proposed_launch-40">[36]</a> </section><div class="mw-heading mw-heading2 section-heading" onclick="mfTempOpenSection(6)"><h2 id="See_also">See also</h2> <a role="button" href="/w/index.php?title=65803_Didymos&action=edit&section=7" title="Edit section: See also" class="cdx-button cdx-button--size-large cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--icon-only cdx-button--weight-quiet "> edit </a> </div><section class="mf-section-6 collapsible-block" id="mf-section-6"> <ul><li><a href="/wiki/66391_Moshup" title="66391 Moshup">66391 Moshup</a> – a similar near-Earth asteroid binary system</li> <li><a href="/wiki/List_of_asteroids_visited_by_spacecraft" class="mw-redirect" title="List of asteroids visited by spacecraft">List of asteroids visited by spacecraft</a></li></ul> <div style="clear:left;" class=""></div> </section><div class="mw-heading mw-heading2 section-heading" onclick="mfTempOpenSection(7)"><h2 id="Notes">Notes</h2> <a role="button" href="/w/index.php?title=65803_Didymos&action=edit&section=8" title="Edit section: Notes" class="cdx-button cdx-button--size-large cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--icon-only cdx-button--weight-quiet "> edit </a> </div><section class="mf-section-7 collapsible-block" id="mf-section-7"> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1239543626"><div class="reflist reflist-lower-alpha"> <div class="mw-references-wrap"><ol class="references"> <li id="cite_note-Apollo-4">^ <a href="#cite_ref-Apollo_4-0">a</a> <a href="#cite_ref-Apollo_4-1">b</a> It is an <a href="/wiki/Apollo_asteroid" title="Apollo asteroid">Apollo asteroid</a> because <a href="/wiki/Perihelion" class="mw-redirect" title="Perihelion">perihelion</a> (q) is less than 1.017 AU (Earth aphelion), not greater. </li> <li id="cite_note-diameter-7"><a href="#cite_ref-diameter_7-0">^</a> Volume-equivalent spherical diameter is calculated from an ellipsoid's volume given Didymos's dimensions of 851 × 849 × 620 m,<a href="#cite_note-Cheng2023-6">[5]</a>: 28–29 and then solving for radius with <math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle r={\sqrt[{3}]{3V \over 4\pi }}}"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <mi>r</mi> <mo>=</mo> <mrow class="MJX-TeXAtom-ORD"> <mroot> <mfrac> <mrow> <mn>3</mn> <mi>V</mi> </mrow> <mrow> <mn>4</mn> <mi>π</mi> </mrow> </mfrac> <mrow class="MJX-TeXAtom-ORD"> <mn>3</mn> </mrow> </mroot> </mrow> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle r={\sqrt[{3}]{3V \over 4\pi }}}</annotation> </semantics> </math><noscript><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/0433b06fed29a77aa4be9b21c2fb831b441da220" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -2.338ex; width:10.257ex; height:6.176ex;" alt="{\displaystyle r={\sqrt[{3}]{3V \over 4\pi }}}"></noscript><span class="lazy-image-placeholder" style="width: 10.257ex;height: 6.176ex;vertical-align: -2.338ex;" data-src="https://wikimedia.org/api/rest_v1/media/math/render/svg/0433b06fed29a77aa4be9b21c2fb831b441da220" data-alt="{\displaystyle r={\sqrt[{3}]{3V \over 4\pi }}}" data-class="mwe-math-fallback-image-inline mw-invert skin-invert"> . </li> <li id="cite_note-pole-12"><a href="#cite_ref-pole_12-0">^</a> Naidu et al. (2020) give the Didymos's north pole direction in terms of <a href="/wiki/Ecliptic_coordinates" class="mw-redirect" title="Ecliptic coordinates">ecliptic coordinates</a>, where λ is ecliptic longitude and β is ecliptic latitude.<a href="#cite_note-Naidu2020-8">[6]</a>: 12 β is the angular offset from the ecliptic plane whereas inclination i with respect to the ecliptic is the angular offset from the ecliptic north pole at β = +90°; i with respect to the ecliptic would be the <a href="/wiki/Angle#Combining_angle_pairs" title="Angle">complement</a> of β.<a href="#cite_note-coordstransform-11">[9]</a> Therefore, given β = –84°, i = 90° – (–84°) = 174° from the ecliptic. </li> <li id="cite_note-lightcurve-plot-PDO-23"><a href="#cite_ref-lightcurve-plot-PDO_23-0">^</a> <a rel="nofollow" class="external text" href="http://www.minorplanetobserver.com/pdolc/A65803_2003.HTM">Lightcurve plots</a> of 65803 Didymos, Palmer Divide Observatory, <a href="/wiki/Brian_D._Warner" title="Brian D. Warner">B. D. Warner</a> </li> </ol></div></div> </section><div class="mw-heading mw-heading2 section-heading" onclick="mfTempOpenSection(8)"><h2 id="References">References</h2> <a role="button" href="/w/index.php?title=65803_Didymos&action=edit&section=9" title="Edit section: References" class="cdx-button cdx-button--size-large cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--icon-only cdx-button--weight-quiet "> edit </a> </div><section class="mf-section-8 collapsible-block" id="mf-section-8"> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1239543626"><div class="reflist"> <div class="mw-references-wrap mw-references-columns"><ol class="references"> <li id="cite_note-jpldata-1">^ <a href="#cite_ref-jpldata_1-0">a</a> <a href="#cite_ref-jpldata_1-1">b</a> <a href="#cite_ref-jpldata_1-2">c</a> <a href="#cite_ref-jpldata_1-3">d</a> <a href="#cite_ref-jpldata_1-4">e</a> <a href="#cite_ref-jpldata_1-5">f</a> <a href="#cite_ref-jpldata_1-6">g</a> <a href="#cite_ref-jpldata_1-7">h</a> <style data-mw-deduplicate="TemplateStyles:r1238218222">.mw-parser-output cite.citation{font-style:inherit;word-wrap:break-word}.mw-parser-output .citation q{quotes:"\"""\"""'""'"}.mw-parser-output .citation:target{background-color:rgba(0,127,255,0.133)}.mw-parser-output .id-lock-free.id-lock-free a{background:url("//upload.wikimedia.org/wikipedia/commons/6/65/Lock-green.svg")right 0.1em center/9px no-repeat}.mw-parser-output .id-lock-limited.id-lock-limited a,.mw-parser-output .id-lock-registration.id-lock-registration a{background:url("//upload.wikimedia.org/wikipedia/commons/d/d6/Lock-gray-alt-2.svg")right 0.1em center/9px no-repeat}.mw-parser-output .id-lock-subscription.id-lock-subscription a{background:url("//upload.wikimedia.org/wikipedia/commons/a/aa/Lock-red-alt-2.svg")right 0.1em center/9px no-repeat}.mw-parser-output .cs1-ws-icon a{background:url("//upload.wikimedia.org/wikipedia/commons/4/4c/Wikisource-logo.svg")right 0.1em center/12px no-repeat}body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-free a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-limited a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-registration a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-subscription a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .cs1-ws-icon a{background-size:contain;padding:0 1em 0 0}.mw-parser-output .cs1-code{color:inherit;background:inherit;border:none;padding:inherit}.mw-parser-output .cs1-hidden-error{display:none;color:var(--color-error,#d33)}.mw-parser-output .cs1-visible-error{color:var(--color-error,#d33)}.mw-parser-output .cs1-maint{display:none;color:#085;margin-left:0.3em}.mw-parser-output .cs1-kern-left{padding-left:0.2em}.mw-parser-output .cs1-kern-right{padding-right:0.2em}.mw-parser-output .citation .mw-selflink{font-weight:inherit}@media screen{.mw-parser-output .cs1-format{font-size:95%}html.skin-theme-clientpref-night .mw-parser-output .cs1-maint{color:#18911f}}@media screen and (prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .cs1-maint{color:#18911f}}</style><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://ssd.jpl.nasa.gov/tools/sbdb_lookup.html#/?sstr=2065803&view=OPC">"JPL Small-Body Database Browser: 65803 Didymos (1996 GT)"</a> (2017-04-27 last obs.). <a href="/wiki/Jet_Propulsion_Laboratory" title="Jet Propulsion Laboratory">Jet Propulsion Laboratory</a>. <a rel="nofollow" class="external text" href="https://web.archive.org/web/20210422130744/https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2065803">Archived</a> from the original on 22 April 2021. 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Retrieved 12 March 2017.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=bookitem&rft.atitle=Photometric+Behaviour+Dependent+on+Solar+Phase+Angle+and+Physical+Characteristics+of+Binary+Near-Earth-Asteroid+%2865803%29+1996+GT&rft.btitle=35th+Lunar+and+Planetary+Science+Conference&rft.pages=1623&rft.date=2004-03&rft_id=info%3Abibcode%2F2004LPI....35.1623K&rft.aulast=Kitazato&rft.aufirst=K.&rft.au=Abe%2C+M.&rft.au=Mito%2C+H.&rft.au=Tarusawa%2C+K.&rft.au=Soyano%2C+T.&rft.au=Nishihara%2C+S.&rft.au=Sarugaku%2C+Y.&rft_id=http%3A%2F%2Fadsabs.harvard.edu%2Fcgi-bin%2Fbib_query%3Fbibcode%3D2004LPI....35.1623K&rfr_id=info%3Asid%2Fen.wikipedia.org%3A65803+Didymos" class="Z3988"> </li> <li id="cite_note-Pravec-2012b-16"><a href="#cite_ref-Pravec-2012b_16-0">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFPravecHarrisKusnirákGalád2012" class="citation journal cs1">Pravec, Petr; Harris, Alan W.; Kusnirák, Peter; Galád, Adrián; Hornoch, Kamil (September 2012). <a rel="nofollow" class="external text" href="http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2012Icar..221..365P">"Absolute magnitudes of asteroids and a revision of asteroid albedo estimates from WISE thermal observations"</a>. Icarus. 221 (1): 365–387. <a href="/wiki/Bibcode_(identifier)" class="mw-redirect" title="Bibcode (identifier)">Bibcode</a>:<a rel="nofollow" class="external text" href="https://ui.adsabs.harvard.edu/abs/2012Icar..221..365P">2012Icar..221..365P</a>. <a href="/wiki/Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<a rel="nofollow" class="external text" href="https://doi.org/10.1016%2Fj.icarus.2012.07.026">10.1016/j.icarus.2012.07.026</a>. 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Retrieved 14 October 2022.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=Horizons+Batch+for+2184-Oct-14+Close+Approach&rft.pub=JPL+Horizons&rft_id=https%3A%2F%2Fssd.jpl.nasa.gov%2Fhorizons_batch.cgi%3Fbatch%3D1%26COMMAND%3D%252765803%2527%26START_TIME%3D%25272184-Oct-14%252010%3A15%2527%26STOP_TIME%3D%25272184-Oct-15%2527%26STEP_SIZE%3D%25271%2520day%2527%26QUANTITIES%3D%252720%2C39%2527&rfr_id=info%3Asid%2Fen.wikipedia.org%3A65803+Didymos" class="Z3988"> RNG_3sigma = uncertainty range in km. 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Retrieved 7 October 2024.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=www.esa.int&rft.atitle=Planetary+defence+mission+Hera+heading+for+deflected+asteroid&rft_id=https%3A%2F%2Fwww.esa.int%2FSpace_Safety%2FHera%2FPlanetary_defence_mission_Hera_heading_for_deflected_asteroid&rfr_id=info%3Asid%2Fen.wikipedia.org%3A65803+Didymos" class="Z3988"> </li> <li id="cite_note-Proposed_launch-40"><a href="#cite_ref-Proposed_launch_40-0">^</a> <a rel="nofollow" class="external text" href="http://iaaweb.org/iaa/Scientific%20Activity/conf/pdc2019/IAA-PDC-19-04-09ab.pdf">Numerical modelling of the DART impact and the importance of the Hera mission.</a>[<a href="/wiki/Wikipedia:Link_rot" title="Wikipedia:Link rot">permanent dead link</a>‍] Sabina D. Raducan, Thomas M. Davison, Gareth S. Collins. PDC 2019. Washington, D.C., USA. </li> </ol></div></div> </section><div class="mw-heading mw-heading2 section-heading" onclick="mfTempOpenSection(9)"><h2 id="External_links">External links</h2> <a role="button" href="/w/index.php?title=65803_Didymos&action=edit&section=10" title="Edit section: External links" class="cdx-button cdx-button--size-large cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--icon-only cdx-button--weight-quiet "> edit </a> </div><section class="mf-section-9 collapsible-block" id="mf-section-9"> <style data-mw-deduplicate="TemplateStyles:r1235681985">.mw-parser-output .side-box{margin:4px 0;box-sizing:border-box;border:1px solid #aaa;font-size:88%;line-height:1.25em;background-color:var(--background-color-interactive-subtle,#f8f9fa);display:flow-root}.mw-parser-output .side-box-abovebelow,.mw-parser-output .side-box-text{padding:0.25em 0.9em}.mw-parser-output .side-box-image{padding:2px 0 2px 0.9em;text-align:center}.mw-parser-output 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Commons has media related to <a href="https://commons.wikimedia.org/wiki/Category:65803_Didymos" class="extiw" title="commons:Category:65803 Didymos">65803 Didymos</a>.</div></div> </div> <ul><li><a rel="nofollow" class="external text" href="http://www.johnstonsarchive.net/astro/asteroidmoons.html">Asteroids with Satellites</a>, Robert Johnston, johnstonsarchive.net</li> <li><a rel="nofollow" class="external text" href="https://www.minorplanetcenter.net/iau/lists/NumberedMPs065001.html">Discovery Circumstances: Numbered Minor Planets (65001)-(70000)</a> – Minor Planet Center</li> <li><a rel="nofollow" class="external text" href="https://newton.spacedys.com/neodys/index.php?n=65803&pc=1.1.0">65803 Didymos</a> at NeoDyS-2, Near Earth Objects—Dynamic Site <ul><li><a rel="nofollow" class="external text" href="https://newton.spacedys.com/neodys/index.php?n=65803&pc=1.1.3.0">Ephemerides</a> · <a rel="nofollow" class="external text" href="https://newton.spacedys.com/neodys/index.php?n=65803&pc=1.1.4.0">Observation prediction</a> · <a rel="nofollow" class="external text" href="https://newton.spacedys.com/neodys/index.php?n=65803&pc=1.1.1">Orbital info</a> · <a rel="nofollow" class="external text" href="https://newton.spacedys.com/neodys/index.php?n=65803&pc=1.1.5">MOID</a> · <a rel="nofollow" class="external text" href="https://newton.spacedys.com/neodys/index.php?n=65803&pc=1.1.6">Proper elements</a> · <a rel="nofollow" class="external text" href="https://newton.spacedys.com/neodys/index.php?n=65803&pc=1.1.7.0">Observational info</a> · <a rel="nofollow" class="external text" href="https://newton.spacedys.com/neodys/index.php?n=65803&pc=1.1.8">Close approaches</a> · <a rel="nofollow" class="external text" href="https://newton.spacedys.com/neodys/index.php?n=65803&pc=1.1.9">Physical info</a> · <a rel="nofollow" class="external text" href="https://newton.spacedys.com/neodys/index.php?n=65803&pc=1.1.A">Orbit animation</a></li></ul></li> <li><a rel="nofollow" class="external text" href="https://ssd.jpl.nasa.gov/tools/sbdb_lookup.html#/?sstr=20065803">65803 Didymos</a> at the <a href="/wiki/JPL_Small-Body_Database" title="JPL Small-Body Database">JPL Small-Body Database</a> <a href="https://www.wikidata.org/wiki/Q2265762#P716" title="Edit this at Wikidata"><noscript><img alt="Edit this at Wikidata" src="//upload.wikimedia.org/wikipedia/en/thumb/8/8a/OOjs_UI_icon_edit-ltr-progressive.svg/10px-OOjs_UI_icon_edit-ltr-progressive.svg.png" decoding="async" width="10" height="10" class="mw-file-element" data-file-width="20" data-file-height="20"></noscript><span class="lazy-image-placeholder" style="width: 10px;height: 10px;" data-src="//upload.wikimedia.org/wikipedia/en/thumb/8/8a/OOjs_UI_icon_edit-ltr-progressive.svg/10px-OOjs_UI_icon_edit-ltr-progressive.svg.png" data-alt="Edit this at Wikidata" data-width="10" data-height="10" 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position: absolute;"></noscript> <div class="printfooter" data-nosnippet="">Retrieved from "<a dir="ltr" href="https://en.wikipedia.org/w/index.php?title=65803_Didymos&oldid=1259053911">https://en.wikipedia.org/w/index.php?title=65803_Didymos&oldid=1259053911</a>"</div></div> </div> <div class="post-content" id="page-secondary-actions"> </div> </main> <footer class="mw-footer minerva-footer" role="contentinfo"> <a class="last-modified-bar" href="/w/index.php?title=65803_Didymos&action=history"> <div class="post-content last-modified-bar__content"> Last edited on 23 November 2024, at 03:07 </div> </a> <div class="post-content footer-content"> <div id='mw-data-after-content'> <div class="read-more-container"></div> </div> <div id="p-lang"> <h4>Languages</h4> <section> <ul id="p-variants" class="minerva-languages"></ul> <ul class="minerva-languages"><li class="interlanguage-link interwiki-bs mw-list-item"><a href="https://bs.wikipedia.org/wiki/65803_Didim" title="65803 Didim – Bosnian" lang="bs" hreflang="bs" data-title="65803 Didim" data-language-autonym="Bosanski" data-language-local-name="Bosnian" class="interlanguage-link-target">Bosanski</a></li><li class="interlanguage-link interwiki-cs mw-list-item"><a href="https://cs.wikipedia.org/wiki/Didymos_(planetka)" title="Didymos (planetka) – Czech" lang="cs" hreflang="cs" data-title="Didymos (planetka)" data-language-autonym="Čeština" data-language-local-name="Czech" class="interlanguage-link-target">Čeština</a></li><li class="interlanguage-link interwiki-de mw-list-item"><a href="https://de.wikipedia.org/wiki/(65803)_Didymos" title="(65803) Didymos – German" lang="de" hreflang="de" data-title="(65803) Didymos" data-language-autonym="Deutsch" data-language-local-name="German" class="interlanguage-link-target">Deutsch</a></li><li class="interlanguage-link interwiki-et mw-list-item"><a href="https://et.wikipedia.org/wiki/65803_Didymos" title="65803 Didymos – Estonian" lang="et" hreflang="et" data-title="65803 Didymos" data-language-autonym="Eesti" data-language-local-name="Estonian" class="interlanguage-link-target">Eesti</a></li><li class="interlanguage-link interwiki-el mw-list-item"><a href="https://el.wikipedia.org/wiki/65803_%CE%94%CE%AF%CE%B4%CF%85%CE%BC%CE%BF%CF%82" title="65803 Δίδυμος – Greek" lang="el" hreflang="el" data-title="65803 Δίδυμος" data-language-autonym="Ελληνικά" data-language-local-name="Greek" class="interlanguage-link-target">Ελληνικά</a></li><li class="interlanguage-link interwiki-es mw-list-item"><a href="https://es.wikipedia.org/wiki/(65803)_D%C3%ADdimo" title="(65803) Dídimo – Spanish" lang="es" hreflang="es" data-title="(65803) Dídimo" data-language-autonym="Español" data-language-local-name="Spanish" class="interlanguage-link-target">Español</a></li><li class="interlanguage-link interwiki-eo mw-list-item"><a href="https://eo.wikipedia.org/wiki/65803_Didimo" title="65803 Didimo – Esperanto" lang="eo" hreflang="eo" data-title="65803 Didimo" data-language-autonym="Esperanto" data-language-local-name="Esperanto" class="interlanguage-link-target">Esperanto</a></li><li class="interlanguage-link interwiki-eu mw-list-item"><a href="https://eu.wikipedia.org/wiki/65803_Didimos" title="65803 Didimos – Basque" lang="eu" hreflang="eu" data-title="65803 Didimos" data-language-autonym="Euskara" data-language-local-name="Basque" class="interlanguage-link-target">Euskara</a></li><li class="interlanguage-link interwiki-fa mw-list-item"><a href="https://fa.wikipedia.org/wiki/%DB%B6%DB%B5%DB%B8%DB%B0%DB%B3_%D8%AF%DB%8C%D8%AF%DB%8C%D9%85%D9%88%D8%B3" title="۶۵۸۰۳ دیدیموس – Persian" lang="fa" hreflang="fa" data-title="۶۵۸۰۳ دیدیموس" data-language-autonym="فارسی" data-language-local-name="Persian" class="interlanguage-link-target">فارسی</a></li><li class="interlanguage-link interwiki-fr mw-list-item"><a href="https://fr.wikipedia.org/wiki/(65803)_Didymos" title="(65803) Didymos – French" lang="fr" hreflang="fr" data-title="(65803) Didymos" data-language-autonym="Français" data-language-local-name="French" class="interlanguage-link-target">Français</a></li><li class="interlanguage-link interwiki-ko mw-list-item"><a href="https://ko.wikipedia.org/wiki/65803_%EB%94%94%EB%94%94%EB%AA%A8%EC%8A%A4" title="65803 디디모스 – Korean" lang="ko" hreflang="ko" data-title="65803 디디모스" data-language-autonym="한국어" data-language-local-name="Korean" class="interlanguage-link-target">한국어</a></li><li class="interlanguage-link interwiki-id mw-list-item"><a href="https://id.wikipedia.org/wiki/65803_Didymos" title="65803 Didymos – Indonesian" lang="id" hreflang="id" data-title="65803 Didymos" data-language-autonym="Bahasa Indonesia" data-language-local-name="Indonesian" class="interlanguage-link-target">Bahasa Indonesia</a></li><li class="interlanguage-link interwiki-it mw-list-item"><a href="https://it.wikipedia.org/wiki/65803_Didymos" title="65803 Didymos – Italian" lang="it" hreflang="it" data-title="65803 Didymos" data-language-autonym="Italiano" data-language-local-name="Italian" class="interlanguage-link-target">Italiano</a></li><li class="interlanguage-link interwiki-ka mw-list-item"><a href="https://ka.wikipedia.org/wiki/65803_%E1%83%93%E1%83%98%E1%83%93%E1%83%98%E1%83%9B%E1%83%9D%E1%83%A1%E1%83%98" title="65803 დიდიმოსი – Georgian" lang="ka" hreflang="ka" data-title="65803 დიდიმოსი" data-language-autonym="ქართული" data-language-local-name="Georgian" class="interlanguage-link-target">ქართული</a></li><li class="interlanguage-link interwiki-kk mw-list-item"><a href="https://kk.wikipedia.org/wiki/(65803)_%D0%94%D0%B8%D0%B4%D0%B8%D0%BC%D0%BE%D1%81" title="(65803) Дидимос – Kazakh" lang="kk" hreflang="kk" data-title="(65803) Дидимос" data-language-autonym="Қазақша" data-language-local-name="Kazakh" class="interlanguage-link-target">Қазақша</a></li><li class="interlanguage-link interwiki-lb mw-list-item"><a href="https://lb.wikipedia.org/wiki/(65803)_Didymos" title="(65803) Didymos – Luxembourgish" lang="lb" hreflang="lb" data-title="(65803) Didymos" data-language-autonym="Lëtzebuergesch" data-language-local-name="Luxembourgish" class="interlanguage-link-target">Lëtzebuergesch</a></li><li class="interlanguage-link interwiki-hu mw-list-item"><a href="https://hu.wikipedia.org/wiki/65803_Didymos" title="65803 Didymos – Hungarian" lang="hu" hreflang="hu" data-title="65803 Didymos" data-language-autonym="Magyar" data-language-local-name="Hungarian" class="interlanguage-link-target">Magyar</a></li><li class="interlanguage-link interwiki-arz mw-list-item"><a href="https://arz.wikipedia.org/wiki/65803_Didymos_(%D9%83%D9%88%D9%8A%D9%83%D8%A8)" title="65803 Didymos (كويكب) – Egyptian Arabic" lang="arz" hreflang="arz" data-title="65803 Didymos (كويكب)" data-language-autonym="مصرى" data-language-local-name="Egyptian Arabic" class="interlanguage-link-target">مصرى</a></li><li class="interlanguage-link interwiki-min mw-list-item"><a href="https://min.wikipedia.org/wiki/65803_Didymos" title="65803 Didymos – Minangkabau" lang="min" hreflang="min" data-title="65803 Didymos" data-language-autonym="Minangkabau" data-language-local-name="Minangkabau" class="interlanguage-link-target">Minangkabau</a></li><li class="interlanguage-link interwiki-ja mw-list-item"><a href="https://ja.wikipedia.org/wiki/%E3%83%87%E3%82%A3%E3%83%87%E3%82%A3%E3%83%A2%E3%82%B9_(%E5%B0%8F%E6%83%91%E6%98%9F)" title="ディディモス (小惑星) – Japanese" lang="ja" hreflang="ja" data-title="ディディモス (小惑星)" data-language-autonym="日本語" data-language-local-name="Japanese" class="interlanguage-link-target">日本語</a></li><li class="interlanguage-link interwiki-pl mw-list-item"><a href="https://pl.wikipedia.org/wiki/(65803)_Didymos" title="(65803) Didymos – Polish" lang="pl" hreflang="pl" data-title="(65803) Didymos" data-language-autonym="Polski" data-language-local-name="Polish" class="interlanguage-link-target">Polski</a></li><li class="interlanguage-link interwiki-pt mw-list-item"><a href="https://pt.wikipedia.org/wiki/65803_Didymos" title="65803 Didymos – Portuguese" lang="pt" hreflang="pt" data-title="65803 Didymos" data-language-autonym="Português" data-language-local-name="Portuguese" class="interlanguage-link-target">Português</a></li><li class="interlanguage-link interwiki-ro mw-list-item"><a href="https://ro.wikipedia.org/wiki/65803_Didymos" title="65803 Didymos – Romanian" lang="ro" hreflang="ro" data-title="65803 Didymos" data-language-autonym="Română" data-language-local-name="Romanian" class="interlanguage-link-target">Română</a></li><li class="interlanguage-link interwiki-ru mw-list-item"><a href="https://ru.wikipedia.org/wiki/(65803)_%D0%94%D0%B8%D0%B4%D0%B8%D0%BC" title="(65803) Дидим – Russian" lang="ru" hreflang="ru" data-title="(65803) Дидим" data-language-autonym="Русский" data-language-local-name="Russian" class="interlanguage-link-target">Русский</a></li><li class="interlanguage-link interwiki-sk mw-list-item"><a href="https://sk.wikipedia.org/wiki/65803_Didymos" title="65803 Didymos – Slovak" lang="sk" hreflang="sk" data-title="65803 Didymos" data-language-autonym="Slovenčina" data-language-local-name="Slovak" class="interlanguage-link-target">Slovenčina</a></li><li class="interlanguage-link interwiki-su mw-list-item"><a href="https://su.wikipedia.org/wiki/65803_Didymos" title="65803 Didymos – Sundanese" lang="su" hreflang="su" data-title="65803 Didymos" data-language-autonym="Sunda" data-language-local-name="Sundanese" class="interlanguage-link-target">Sunda</a></li><li class="interlanguage-link interwiki-fi mw-list-item"><a href="https://fi.wikipedia.org/wiki/65803_Didymos" title="65803 Didymos – Finnish" lang="fi" hreflang="fi" data-title="65803 Didymos" data-language-autonym="Suomi" data-language-local-name="Finnish" class="interlanguage-link-target">Suomi</a></li><li class="interlanguage-link interwiki-sv mw-list-item"><a href="https://sv.wikipedia.org/wiki/65803_Didymos" title="65803 Didymos – Swedish" lang="sv" hreflang="sv" data-title="65803 Didymos" data-language-autonym="Svenska" data-language-local-name="Swedish" class="interlanguage-link-target">Svenska</a></li><li class="interlanguage-link interwiki-tr mw-list-item"><a href="https://tr.wikipedia.org/wiki/65803_Didymos" title="65803 Didymos – Turkish" lang="tr" hreflang="tr" data-title="65803 Didymos" data-language-autonym="Türkçe" data-language-local-name="Turkish" class="interlanguage-link-target">Türkçe</a></li><li class="interlanguage-link interwiki-uk mw-list-item"><a href="https://uk.wikipedia.org/wiki/65803_%D0%94%D1%96%D0%B4%D0%B8%D0%BC" title="65803 Дідим – Ukrainian" lang="uk" hreflang="uk" data-title="65803 Дідим" data-language-autonym="Українська" data-language-local-name="Ukrainian" class="interlanguage-link-target">Українська</a></li><li class="interlanguage-link interwiki-vi mw-list-item"><a href="https://vi.wikipedia.org/wiki/65803_Didymos" title="65803 Didymos – Vietnamese" lang="vi" hreflang="vi" data-title="65803 Didymos" data-language-autonym="Tiếng Việt" data-language-local-name="Vietnamese" class="interlanguage-link-target">Tiếng Việt</a></li><li class="interlanguage-link interwiki-zh mw-list-item"><a href="https://zh.wikipedia.org/wiki/%E9%9B%99%E7%94%9F%E6%98%9F" title="雙生星 – Chinese" lang="zh" hreflang="zh" data-title="雙生星" data-language-autonym="中文" data-language-local-name="Chinese" class="interlanguage-link-target">中文</a></li></ul> </section> </div> <div class="minerva-footer-logo"><img src="/static/images/mobile/copyright/wikipedia-wordmark-en.svg" alt="Wikipedia" width="120" height="18" style="width: 7.5em; height: 1.125em;"/> </div> <ul id="footer-info" class="footer-info hlist hlist-separated"> <li id="footer-info-lastmod"> This page was last edited on 23 November 2024, at 03:07 (UTC).</li> <li id="footer-info-copyright">Content is available under <a class="external" rel="nofollow" href="https://creativecommons.org/licenses/by-sa/4.0/deed.en">CC 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