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data-mw-ve-target-container> <div class="vector-body-before-content"> <div class="mw-indicators"> </div> <div id="siteSub" class="noprint">From Wikipedia, the free encyclopedia</div> </div> <div id="contentSub"><div id="mw-content-subtitle"></div></div> <div id="mw-content-text" class="mw-body-content"><div class="mw-content-ltr mw-parser-output" lang="en" dir="ltr"><div class="shortdescription nomobile noexcerpt noprint searchaux" style="display:none">BL Lac object in the constellation Draco</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><table class="infobox"><tbody><tr><th colspan="2" class="infobox-above" style="background: #ddd;">S5 1803+784</th></tr><tr><td colspan="2" class="infobox-image"><span class="mw-default-size" typeof="mw:File/Frameless"><a href="/wiki/File:Image_of_S5_1803%2B784.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/f/f2/Image_of_S5_1803%2B784.jpg/290px-Image_of_S5_1803%2B784.jpg" decoding="async" width="290" height="300" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/f/f2/Image_of_S5_1803%2B784.jpg/435px-Image_of_S5_1803%2B784.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/f/f2/Image_of_S5_1803%2B784.jpg/580px-Image_of_S5_1803%2B784.jpg 2x" data-file-width="717" data-file-height="742" /></a></span><div class="infobox-caption">The BL Lac object S5 1803+784.</div></td></tr><tr><th colspan="2" class="infobox-header" style="background: #ddd;">Observation data (<a href="/wiki/J2000.0" class="mw-redirect" title="J2000.0">J2000.0</a> <a href="/wiki/Epoch_(astronomy)" title="Epoch (astronomy)">epoch</a>)</th></tr><tr><th scope="row" class="infobox-label" style="background: inherit;"><a href="/wiki/Constellation" title="Constellation">Constellation</a></th><td class="infobox-data"><a href="/wiki/Draco_(constellation)" title="Draco (constellation)">Draco</a></td></tr><tr><th scope="row" class="infobox-label" style="background: inherit;"><a href="/wiki/Right_ascension" title="Right ascension">Right ascension</a></th><td class="infobox-data"><span class="nowrap">18<sup>h</sup> 00<sup>m</sup> 45.683<sup>s</sup></span></td></tr><tr><th scope="row" class="infobox-label" style="background: inherit;"><a href="/wiki/Declination" title="Declination">Declination</a></th><td class="infobox-data">+78° 28′ 04.018″</td></tr><tr><th scope="row" class="infobox-label" style="background: inherit;"><a href="/wiki/Redshift" title="Redshift">Redshift</a></th><td class="infobox-data">0.691000</td></tr><tr><th scope="row" class="infobox-label" style="background: inherit;"><a href="/wiki/Radial_velocity" title="Radial velocity">Heliocentric radial velocity</a></th><td class="infobox-data">207,157 <a href="/wiki/Kilometer_per_second" class="mw-redirect" title="Kilometer per second">km/s</a></td></tr><tr><th scope="row" class="infobox-label" style="background: inherit;"><a href="/wiki/Cosmic_distance_ladder" title="Cosmic distance ladder">Distance</a></th><td class="infobox-data">6.419 <a href="/wiki/Light_year" class="mw-redirect" title="Light year">Gly</a></td></tr><tr><th scope="row" class="infobox-label" style="background: inherit;"><a href="/wiki/Apparent_magnitude" title="Apparent magnitude">Apparent magnitude</a> <small title="in visual light">(V)</small></th><td class="infobox-data">15.90</td></tr><tr><th scope="row" class="infobox-label" style="background: inherit;"><a href="/wiki/Apparent_magnitude" title="Apparent magnitude">Apparent magnitude</a> <small title="in B band">(B)</small></th><td class="infobox-data">16.4</td></tr><tr><th colspan="2" class="infobox-header" style="background: #ddd;">Characteristics</th></tr><tr><th scope="row" class="infobox-label" style="background: inherit;"><a href="/wiki/Galaxy_morphological_classification" title="Galaxy morphological classification">Type</a></th><td class="infobox-data">FRSQ, BL LAC</td></tr><tr><th colspan="2" class="infobox-header" style="background: #ddd;">Other designations</th></tr><tr><td colspan="2" class="infobox-full-data"><a href="/wiki/IRAS" title="IRAS">IRAS</a> 18036+7827, S5 1803+78, <a href="/wiki/NRAO_VLA_Sky_Survey" title="NRAO VLA Sky Survey">NVSS</a> J180045+782805, WMAP 072, 4FGL J1800.6+7828, <a href="/wiki/Sixth_Cambridge_Survey_of_Radio_Sources" title="Sixth Cambridge Survey of Radio Sources">6C</a> B180338.9+782745</td></tr></tbody></table> <p><b>S5 1803+784</b> is a <a href="/wiki/BL_Lacertae_object" title="BL Lacertae object">BL Lacertae object</a><sup id="cite_ref-1" class="reference"><a href="#cite_note-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup> located in the far northern <a href="/wiki/Constellation" title="Constellation">constellation</a> of <a href="/wiki/Draco_(constellation)" title="Draco (constellation)">Draco</a>. It has an estimated <a href="/wiki/Redshift" title="Redshift">redshift</a> of (z) 0.68<sup id="cite_ref-2" class="reference"><a href="#cite_note-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup> and was first discovered as an <a href="/wiki/Astronomical_radio_source" title="Astronomical radio source">astronomical radio source</a> in 1981 by a team of <a href="/wiki/Astronomer" title="Astronomer">astronomers</a>.<sup id="cite_ref-3" class="reference"><a href="#cite_note-3"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup> This object is also classified as a <a href="/wiki/Blazar" title="Blazar">blazar</a> because of its extreme variability on the <a href="/wiki/Electromagnetic_spectrum" title="Electromagnetic spectrum">electromagnetic spectrum</a><sup id="cite_ref-4" class="reference"><a href="#cite_note-4"><span class="cite-bracket">[</span>4<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-5" class="reference"><a href="#cite_note-5"><span class="cite-bracket">[</span>5<span class="cite-bracket">]</span></a></sup> and a source of <a href="/wiki/Gamma_ray" title="Gamma ray">gamma ray</a> activity.<sup id="cite_ref-6" class="reference"><a href="#cite_note-6"><span class="cite-bracket">[</span>6<span class="cite-bracket">]</span></a></sup> According to preliminary analysis in May 2011, the source of S5 1803+784 has a gamma ray flux (E>100 <a href="/wiki/Electronvolt" title="Electronvolt">MeV</a>) of (1.1 ± 0.2) <a href="/wiki/Electron" title="Electron">electron</a><sup>−6</sup> photon cm<sup>−2</sup> s<sup>−1</sup>.<sup id="cite_ref-7" class="reference"><a href="#cite_note-7"><span class="cite-bracket">[</span>7<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading2"><h2 id="Description">Description</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=S5_1803%2B784&action=edit&section=1" title="Edit section: Description"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>S5 1803+784 is in a constant flaring state.<sup id="cite_ref-8" class="reference"><a href="#cite_note-8"><span class="cite-bracket">[</span>8<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-9" class="reference"><a href="#cite_note-9"><span class="cite-bracket">[</span>9<span class="cite-bracket">]</span></a></sup> In April 2020, S5 1803+784 had a major outburst followed by more flaring episodes. During this period, S5 1803+784 exhibited highest <a href="/wiki/Flux" title="Flux">flux</a> level of 1.1 x 10<sup>−6</sup> ph cm<sup>−2</sup> s<sup>−1</sup> while in pre-flaring region, a low flux was shown below 0.2 x 10<sup>−6</sup> ph cm<sup>−2</sup> s<sup>−1</sup>.<sup id="cite_ref-10" class="reference"><a href="#cite_note-10"><span class="cite-bracket">[</span>10<span class="cite-bracket">]</span></a></sup> In August 2020, S5 1803+784 entered a new flaring phase which lasted for 57 days. Its source <a href="/wiki/Brightness" title="Brightness">brightness</a> varied from 13.617 ± 0.009 to 15.888 ± 0.01 in <a href="/wiki/Photometric_system" title="Photometric system">R-bands</a>, which the brightest-ever state for S5 1803+783 was observed on August 25.<sup id="cite_ref-11" class="reference"><a href="#cite_note-11"><span class="cite-bracket">[</span>11<span class="cite-bracket">]</span></a></sup> It is also known to show <a href="/wiki/Infrared" title="Infrared">near-infrared</a> flares.<sup id="cite_ref-12" class="reference"><a href="#cite_note-12"><span class="cite-bracket">[</span>12<span class="cite-bracket">]</span></a></sup> </p><p>In an optical <a href="/wiki/Light_curve" title="Light curve">light curve</a>, S5 1803+784 showed the overall variation greater than 3 <a href="/wiki/Magnitude_(astronomy)" title="Magnitude (astronomy)">magnitudes</a> with the largest changes observed within three flares through no <a href="/wiki/Periodic_function" title="Periodic function">periodicity</a> was found. However, the <a href="/wiki/Radio_spectrum" title="Radio spectrum">radio band</a> variability is found different, showing modest oscillations instead of flares with a maximum <a href="/wiki/Amplitude" title="Amplitude">amplitude</a> of 30%.<sup id="cite_ref-13" class="reference"><a href="#cite_note-13"><span class="cite-bracket">[</span>13<span class="cite-bracket">]</span></a></sup> </p><p>S5 1803+784 shows a peculiar radio structure with a compact radio core.<sup id="cite_ref-14" class="reference"><a href="#cite_note-14"><span class="cite-bracket">[</span>14<span class="cite-bracket">]</span></a></sup> There is a presence of an ejector <a href="/wiki/Nozzle" title="Nozzle">nozzle</a>, 0.1 <a href="/wiki/Parsec" title="Parsec">parsecs</a> in <a href="/wiki/Diameter" title="Diameter">diameter</a> surrounded by a ring structure with both a diameter of 1.4 parsecs and a width of 0.25 parsecs.<sup id="cite_ref-15" class="reference"><a href="#cite_note-15"><span class="cite-bracket">[</span>15<span class="cite-bracket">]</span></a></sup> Furthermore, it has a weaker secondary component located 45 arcseconds south and slightly to the west side of the core with a faint <a href="/wiki/Radiation" title="Radiation">emission</a> bridge joining them together.<sup id="cite_ref-16" class="reference"><a href="#cite_note-16"><span class="cite-bracket">[</span>16<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-17" class="reference"><a href="#cite_note-17"><span class="cite-bracket">[</span>17<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-18" class="reference"><a href="#cite_note-18"><span class="cite-bracket">[</span>18<span class="cite-bracket">]</span></a></sup> </p><p>The <a href="/wiki/Astrophysical_jet" title="Astrophysical jet">jet</a> of S5 1803+784 has a complex morphology. In milliarcsecond-scales, it is described as a bend chain of seven individual jet components with both separation gaps of 0.2 and 3 mas from its core, where new components appear to be emerging from it every two years. Three of the jet components are found to approach a brightest and stationary component (1.4 mas at 8.4 GHz) exhibiting apparent <a href="/wiki/Superluminal_motion" title="Superluminal motion">superluminal motion</a>.<sup id="cite_ref-19" class="reference"><a href="#cite_note-19"><span class="cite-bracket">[</span>19<span class="cite-bracket">]</span></a></sup> Further studies showed in the jet's parsec-scale, most of the jet components within the inner core remain constant over a long period of time with the jet's width changing periodically around 8–9 years.<sup id="cite_ref-20" class="reference"><a href="#cite_note-20"><span class="cite-bracket">[</span>20<span class="cite-bracket">]</span></a></sup> Interestingly, the jet is shaped into a <a href="/wiki/Cone" title="Cone">cone</a> which the 18-cm emission from the injector region is found to be weaken by a factor of 300.<sup id="cite_ref-21" class="reference"><a href="#cite_note-21"><span class="cite-bracket">[</span>21<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading2"><h2 id="References">References</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=S5_1803%2B784&action=edit&section=2" title="Edit section: References"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <div class="mw-references-wrap mw-references-columns"><ol class="references"> <li id="cite_note-1"><span class="mw-cite-backlink"><b><a href="#cite_ref-1">^</a></b></span> <span class="reference-text"><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 id="CITEREFStromBiermann1991" class="citation journal cs1">Strom, R. 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A.; Witzel, A.; Campbell, R. M.; Ros, E.; Karouzos, M.; Mehta, A.; Aller, M. F.; Aller, H. D.; Beckert, T.; Zensus, J. A. (February 2010). <a rel="nofollow" class="external text" href="https://dx.doi.org/10.1051/0004-6361/20079267">"The kinematics in the pc-scale jets of AGN"</a>. <i>Astronomy and Astrophysics</i>. <b>511</b>: A57. <a href="/wiki/ArXiv_(identifier)" class="mw-redirect" title="ArXiv (identifier)">arXiv</a>:<span class="id-lock-free" title="Freely accessible"><a rel="nofollow" class="external text" href="https://arxiv.org/abs/1001.1973">1001.1973</a></span>. <a href="/wiki/Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<a rel="nofollow" class="external text" href="https://doi.org/10.1051%2F0004-6361%2F20079267">10.1051/0004-6361/20079267</a>. <a href="/wiki/ISSN_(identifier)" class="mw-redirect" title="ISSN (identifier)">ISSN</a> <a rel="nofollow" class="external text" href="https://search.worldcat.org/issn/0004-6361">0004-6361</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Astronomy+and+Astrophysics&rft.atitle=The+kinematics+in+the+pc-scale+jets+of+AGN&rft.volume=511&rft.pages=A57&rft.date=2010-02&rft_id=info%3Aarxiv%2F1001.1973&rft.issn=0004-6361&rft_id=info%3Adoi%2F10.1051%2F0004-6361%2F20079267&rft.aulast=Britzen&rft.aufirst=S.&rft.au=Kudryavtseva%2C+N.+A.&rft.au=Witzel%2C+A.&rft.au=Campbell%2C+R.+M.&rft.au=Ros%2C+E.&rft.au=Karouzos%2C+M.&rft.au=Mehta%2C+A.&rft.au=Aller%2C+M.+F.&rft.au=Aller%2C+H.+D.&rft.au=Beckert%2C+T.&rft.au=Zensus%2C+J.+A.&rft_id=http%3A%2F%2Fdx.doi.org%2F10.1051%2F0004-6361%2F20079267&rfr_id=info%3Asid%2Fen.wikipedia.org%3AS5+1803%2B784" class="Z3988"></span></span> </li> <li id="cite_note-21"><span class="mw-cite-backlink"><b><a href="#cite_ref-21">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFMatveenkoWitzel1999" class="citation journal cs1">Matveenko, L. 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title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Symposium+-+International+Astronomical+Union&rft.atitle=The+Jets+of+Quasars+3C+345+and+1803%2B784&rft.volume=194&rft.pages=%3Cspan+class%3D%22nowrap%22%3E229-%3C%2Fspan%3E234&rft.date=1999&rft_id=info%3Adoi%2F10.1017%2Fs0074180900162047&rft.issn=0074-1809&rft.aulast=Matveenko&rft.aufirst=L.+I.&rft.au=Witzel%2C+A.+I.&rft_id=https%3A%2F%2Farticles.adsabs.harvard.edu%2Fpdf%2F1999AstL...25..555M&rfr_id=info%3Asid%2Fen.wikipedia.org%3AS5+1803%2B784" class="Z3988"></span></span> </li> </ol></div> <div class="mw-heading mw-heading2"><h2 id="External_links">External links</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=S5_1803%2B784&action=edit&section=3" title="Edit section: External links"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li><a rel="nofollow" class="external text" href="https://simbad.u-strasbg.fr/simbad/sim-id?Ident=8C%201803%2B784">S5 1803+784 on SIMBAD</a></li> <li><a rel="nofollow" class="external text" href="http://ned.ipac.caltech.edu/cgi-bin/objsearch?search_type=Obj_id&objid=64242&objname=1&img_stamp=YES&hconst=73.0&omegam=0.27&omegav=0.73&corr_z=1">S5 1803+784 on NASA/IPAC Database</a></li></ul> <p><br /> </p> <div class="navbox-styles"><style data-mw-deduplicate="TemplateStyles:r1129693374">.mw-parser-output .hlist dl,.mw-parser-output .hlist ol,.mw-parser-output .hlist ul{margin:0;padding:0}.mw-parser-output .hlist dd,.mw-parser-output .hlist dt,.mw-parser-output .hlist li{margin:0;display:inline}.mw-parser-output .hlist.inline,.mw-parser-output .hlist.inline dl,.mw-parser-output .hlist.inline ol,.mw-parser-output .hlist.inline ul,.mw-parser-output .hlist dl dl,.mw-parser-output .hlist dl ol,.mw-parser-output .hlist dl ul,.mw-parser-output .hlist ol dl,.mw-parser-output .hlist ol ol,.mw-parser-output .hlist ol ul,.mw-parser-output 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style="border-spacing:0"><tbody><tr><th scope="row" class="navbox-group" style="width:70px"><a href="/wiki/Bayer_designation" title="Bayer designation">Bayer</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Thuban" title="Thuban">α (Thuban)</a></li> <li><a href="/wiki/Beta_Draconis" title="Beta Draconis">β (Rastaban)</a></li> <li><a href="/wiki/Gamma_Draconis" title="Gamma Draconis">γ (Eltanin)</a></li> <li><a href="/wiki/Delta_Draconis" title="Delta Draconis">δ (Altais)</a></li> <li><a href="/wiki/Epsilon_Draconis" title="Epsilon Draconis">ε <i>(Tyl)</i></a></li> <li><a href="/wiki/Zeta_Draconis" title="Zeta Draconis">ζ (Aldhibah)</a></li> <li><a href="/wiki/Eta_Draconis" title="Eta Draconis">η (Athebyne)</a></li> <li><a href="/wiki/Theta_Draconis" title="Theta Draconis">θ</a></li> <li><a href="/wiki/Iota_Draconis" title="Iota Draconis">ι (Edasich)</a></li> <li><a href="/wiki/Kappa_Draconis" title="Kappa Draconis">κ</a></li> <li><a href="/wiki/Lambda_Draconis" title="Lambda Draconis">λ (Giausar)</a></li> <li><a href="/wiki/Mu_Draconis" title="Mu Draconis">μ (Alrakis)</a></li> <li><a href="/wiki/Nu_Draconis" title="Nu Draconis">ν <i>(Kuma)</i></a></li> <li><a href="/wiki/Xi_Draconis" title="Xi Draconis">ξ (Grumium)</a></li> <li><a href="/wiki/Omicron_Draconis" title="Omicron Draconis">ο</a></li> <li><a href="/wiki/Pi_Draconis" title="Pi Draconis">π</a></li> <li><a href="/wiki/Rho_Draconis" title="Rho Draconis">ρ</a></li> <li><a href="/wiki/Sigma_Draconis" title="Sigma Draconis">σ (Alsafi)</a></li> <li><a href="/wiki/Tau_Draconis" title="Tau Draconis">τ</a></li> <li><a href="/wiki/Upsilon_Draconis" title="Upsilon Draconis">υ</a></li> <li><a href="/wiki/Phi_Draconis" title="Phi Draconis">φ</a></li> <li><a href="/wiki/Chi_Draconis" title="Chi Draconis">χ</a></li> <li><a href="/wiki/Psi1_Draconis" title="Psi1 Draconis">ψ<sup>1</sup> (Dziban)</a></li> <li><a href="/wiki/Psi2_Draconis" title="Psi2 Draconis">ψ<sup>2</sup></a></li> <li><a href="/wiki/Omega_Draconis" title="Omega Draconis">ω</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:70px"><a href="/wiki/Flamsteed_designation" title="Flamsteed designation">Flamsteed</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/6_Draconis" title="6 Draconis">6</a></li> <li><a href="/wiki/7_Draconis" title="7 Draconis">7 (Tianyi)</a></li> <li><a href="/wiki/8_Draconis" title="8 Draconis">8 (Taiyi)</a></li> <li><a href="/wiki/10_Draconis" title="10 Draconis">10 (i)</a></li> <li><a href="/wiki/15_Draconis" title="15 Draconis">15 (A)</a></li> <li><a href="/wiki/18_Draconis" title="18 Draconis">18 (g)</a></li> <li><a href="/wiki/19_Draconis" title="19 Draconis">19 (h)</a></li> <li><a href="/wiki/26_Draconis" title="26 Draconis">26</a></li> <li><a href="/wiki/36_Draconis" title="36 Draconis">36</a></li> <li><a href="/wiki/39_Draconis" title="39 Draconis">39 (b)</a></li> <li><a href="/wiki/42_Draconis" title="42 Draconis">42 (Fafnir)</a></li> <li><a href="/wiki/45_Draconis" title="45 Draconis">45 (d)</a></li> <li><a href="/wiki/64_Draconis" title="64 Draconis">64 (e)</a></li> <li><a href="/wiki/68_Draconis" title="68 Draconis">68</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:70px"><a href="/wiki/Variable_star_designation" class="mw-redirect" title="Variable star designation">Variable</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/HD_139319" title="HD 139319">TW</a></li> <li><a href="/wiki/AG_Draconis" title="AG Draconis">AG</a></li> <li><a href="/wiki/BY_Draconis" title="BY Draconis">BY</a></li> <li><a href="/wiki/CL_Draconis" title="CL Draconis">CL</a></li> <li><a href="/wiki/CM_Draconis" title="CM Draconis">CM</a></li> <li><a href="/wiki/CX_Draconis" title="CX Draconis">CX</a></li> <li><a href="/wiki/DO_Draconis" class="mw-redirect" title="DO Draconis">DO</a></li> <li><a href="/wiki/GSC_03549-02811" title="GSC 03549-02811">V581</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:70px"><a href="/wiki/Bright_Star_Catalogue" title="Bright Star Catalogue">HR</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/HD_81817" title="HD 81817">3751</a></li> <li><a href="/wiki/HD_91190" title="HD 91190">4126</a></li> <li><a href="/wiki/HD_113337" title="HD 113337">4934</a></li> <li><a href="/wiki/HD_139357" title="HD 139357">5811</a></li> <li><a href="/wiki/HD_151613" title="HD 151613">6237</a></li> <li><a href="/wiki/Alruba" title="Alruba">6618 (Alruba)</a></li> <li><a href="/wiki/HD_167042" title="HD 167042">6817</a></li> <li><a href="/wiki/HD_175535" title="HD 175535">7137</a></li> <li><a href="/wiki/HD_193664" title="HD 193664">7783</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:70px"><a href="/wiki/Henry_Draper_Catalogue" title="Henry Draper Catalogue">HD</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/HIP_56948" title="HIP 56948">101364</a></li> <li><a href="/wiki/HD_147379" title="HD 147379">147379</a></li> <li><a href="/wiki/HD_156279" title="HD 156279">156279</a></li> <li><a href="/wiki/HD_158259" title="HD 158259">158259</a></li> <li><a href="/wiki/HD_176693" title="HD 176693">176693</a></li> <li><a href="/wiki/HD_191939" title="HD 191939">191939</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:70px">Other</th><td class="navbox-list-with-group navbox-list navbox-even" style="padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/2MASS_1237%2B6526" title="2MASS 1237+6526">2MASS 1237+6526</a></li> <li><a href="/wiki/2MASS_J17554042%2B6551277" class="mw-redirect" title="2MASS J17554042+6551277">2MASS J17554042+6551277</a></li> <li><a href="/wiki/G_240-72" title="G 240-72">G 240-72</a></li> <li><a href="/wiki/GD_356" title="GD 356">GD 356</a></li> <li><a href="/wiki/Gliese_420" class="mw-redirect" title="Gliese 420">Gliese 420</a></li> <li><a href="/wiki/Gliese_625" title="Gliese 625">Gliese 625</a></li> <li><a href="/wiki/Gliese_687" title="Gliese 687">Gliese 687</a></li> <li><a href="/wiki/GRW_%2B70_8247" title="GRW +70 8247">GRW +70 8247</a></li> <li><a href="/wiki/Kepler-4" title="Kepler-4">Kepler-4</a></li> <li><a href="/wiki/Kepler-10" title="Kepler-10">Kepler-10</a></li> <li><a href="/wiki/Kepler-12" title="Kepler-12">Kepler-12</a></li> <li><a href="/wiki/Kepler-90" title="Kepler-90">Kepler-90</a></li> <li><a href="/wiki/Kepler-296" title="Kepler-296">Kepler-296</a></li> <li><a href="/wiki/LP_71-82" title="LP 71-82">LP 71-82</a></li> <li><a href="/wiki/Qatar-1" title="Qatar-1">Qatar-1</a></li> <li><a href="/wiki/Struve_2398" title="Struve 2398">Struve 2398</a></li> <li><a href="/wiki/TOI-1136" title="TOI-1136">TOI-1136</a></li> <li><a href="/wiki/WISEPA_J164715.59%2B563208.2" class="mw-redirect" title="WISEPA J164715.59+563208.2">WISE 1647+5632</a></li></ul> </div></td></tr></tbody></table><div></div></td></tr><tr><td colspan="2" class="navbox-list navbox-odd" style="padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th id="Exoplanets14" scope="row" class="navbox-group" style="width:151px;background: #ddddff;"><a href="/wiki/Exoplanet" title="Exoplanet">Exoplanets</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/42_Draconis_b" title="42 Draconis b">Orbitar</a></li> <li><a href="/wiki/HD_139357_b" title="HD 139357 b">HD 139357 b</a></li> <li><a href="/wiki/HD_167042_b" title="HD 167042 b">HD 167042 b</a></li> <li><a href="/wiki/Iota_Draconis_b" title="Iota Draconis b">Hypatia</a></li> <li><a href="/wiki/Kepler-4b" title="Kepler-4b">Kepler-4b</a></li> <li><a href="/wiki/Kepler-10b" title="Kepler-10b">Kepler-10b</a></li> <li><a href="/wiki/Kepler-10c" title="Kepler-10c">c</a></li> <li><a href="/wiki/Kepler-12b" title="Kepler-12b">Kepler-12b</a></li> <li><a href="/wiki/Kepler-90e" title="Kepler-90e">Kepler-90e</a></li> <li><a href="/wiki/Kepler-90f" title="Kepler-90f">f</a></li> <li><a href="/wiki/Kepler-90g" title="Kepler-90g">g</a></li> <li><a href="/wiki/Kepler-90h" title="Kepler-90h">h</a></li> <li><a href="/wiki/Kepler-90i" title="Kepler-90i">i</a></li> <li><a href="/wiki/TOI-1452_b" title="TOI-1452 b">TOI-1452 b</a></li> <li><a href="/wiki/TrES-2b" title="TrES-2b">TrES-2b</a></li></ul> </div></td></tr></tbody></table><div></div></td></tr><tr><td colspan="2" class="navbox-list navbox-odd" style="padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th id="Star_clusters17" scope="row" class="navbox-group" style="width:151px;background: #ddddff;"><a href="/wiki/Star_cluster" title="Star cluster">Star clusters</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/LAMOST_1" title="LAMOST 1">LAMOST 1</a></li></ul> </div></td></tr></tbody></table><div></div></td></tr><tr><td colspan="2" class="navbox-list navbox-odd" style="padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th id="Nebulae11" scope="row" class="navbox-group" style="width:151px;background: #ddddff;"><a href="/wiki/Nebula" title="Nebula">Nebulae</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/NGC_6742" title="NGC 6742">Abell 50</a></li> <li><a href="/wiki/Cat%27s_Eye_Nebula" title="Cat's Eye Nebula">Cat's Eye Nebula</a></li></ul> </div></td></tr></tbody></table><div></div></td></tr><tr><th scope="row" class="navbox-group" style="text-align: center;;width:55px"><a href="/wiki/Galaxy" title="Galaxy">Galaxies</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="row" class="navbox-group" style="width:70px"><a href="/wiki/New_General_Catalogue" title="New General Catalogue">NGC</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/NGC_3147" title="NGC 3147">3147</a></li> <li><a href="/wiki/NGC_4121" title="NGC 4121">4121</a></li> <li><a href="/wiki/NGC_4125" title="NGC 4125">4125</a></li> <li><a href="/wiki/NGC_4236" title="NGC 4236">4236</a></li> <li><a href="/wiki/NGC_4319" title="NGC 4319">4319</a></li> <li><a href="/wiki/NGC_4345" class="mw-redirect" title="NGC 4345">4345</a></li> <li><a href="/wiki/NGC_4513" title="NGC 4513">4513</a></li> <li><a href="/wiki/NGC_4589" title="NGC 4589">4589</a></li> <li><a href="/wiki/NGC_5678" title="NGC 5678">5678</a></li> <li><a href="/wiki/NGC_5777" title="NGC 5777">5777</a></li> <li><a href="/wiki/NGC_5866" title="NGC 5866">5866</a></li> <li><a href="/wiki/NGC_5866B" title="NGC 5866B">5866B</a></li> <li><a href="/wiki/NGC_5879" title="NGC 5879">5879</a></li> <li><a href="/wiki/NGC_5906" class="mw-redirect" title="NGC 5906">5906</a></li> <li><a href="/wiki/NGC_5907" title="NGC 5907">5907</a></li> <li><a href="/wiki/NGC_5949" title="NGC 5949">5949</a></li> <li><a href="/wiki/NGC_5963" title="NGC 5963">5963</a></li> <li><a href="/wiki/NGC_5965" title="NGC 5965">5965</a></li> <li><a href="/wiki/NGC_5982" title="NGC 5982">5982</a></li> <li><a href="/wiki/NGC_5985" title="NGC 5985">5985</a></li> <li><a href="/wiki/NGC_6090" title="NGC 6090">6090</a></li> <li><a href="/wiki/NGC_6248" title="NGC 6248">6248</a></li> <li><a href="/wiki/NGC_6285" title="NGC 6285">6285</a></li> <li><a href="/wiki/NGC_6286" title="NGC 6286">6286</a></li> <li><a href="/wiki/NGC_6338" title="NGC 6338">6338</a></li> <li><a href="/wiki/NGC_6340" title="NGC 6340">6340</a></li> <li><a href="/wiki/NGC_6365" title="NGC 6365">6365</a></li> <li><a href="/wiki/NGC_6373" title="NGC 6373">6373</a></li> <li><a href="/wiki/NGC_6394" title="NGC 6394">6394</a></li> <li><a href="/wiki/NGC_6412" title="NGC 6412">6412</a></li> <li><a href="/wiki/NGC_6503" title="NGC 6503">6503</a></li> <li><a href="/wiki/NGC_6505" title="NGC 6505">6505</a></li> <li><a href="/wiki/NGC_6566" title="NGC 6566">6566</a></li> <li><a href="/wiki/NGC_6621" title="NGC 6621">6621</a></li> <li><a href="/wiki/NGC_6622" title="NGC 6622">6622</a></li> <li><a href="/wiki/NGC_6670" title="NGC 6670">6670</a></li> <li><a href="/wiki/NGC_6676" title="NGC 6676">6676</a></li> <li><a href="/wiki/NGC_6786" title="NGC 6786">6786</a></li> <li><a href="/wiki/NGC_6789" title="NGC 6789">6789</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:70px">Other</th><td class="navbox-list-with-group navbox-list navbox-odd" style="padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/1ES_1927%2B654" title="1ES 1927+654">1ES 1927+654</a></li> <li><a href="/wiki/1ES_1959%2B650" title="1ES 1959+650">1ES 1959+650</a></li> <li><a href="/wiki/3C_249.1" title="3C 249.1">3C 249.1</a></li> <li><a href="/wiki/3C_305" title="3C 305">3C 305</a></li> <li><a href="/wiki/3C_319" title="3C 319">3C 319</a></li> <li><a href="/wiki/3C_356" title="3C 356">3C 356</a></li> <li><a href="/wiki/3C_371" title="3C 371">3C 371</a></li> <li><a href="/wiki/3C_380" title="3C 380">3C 380</a></li> <li><a href="/wiki/3C_390.3" title="3C 390.3">3C 390.3</a></li> <li><a href="/wiki/3C_401" title="3C 401">3C 401</a></li> <li><a href="/wiki/4C_%2B72.26" title="4C +72.26">4C +72.26</a></li> <li><a href="/wiki/GB_1508%2B5714" title="GB 1508+5714">GB 1508+5714</a></li> <li><a href="/wiki/H1821%2B643" title="H1821+643">H1821+643</a></li> <li><a href="/wiki/HFLS3" title="HFLS3">HFLS3</a></li> <li><a href="/wiki/KKR_25" title="KKR 25">KKR 25</a></li> <li><a href="/wiki/Markarian_876" title="Markarian 876">Markarian 876</a></li> <li><a href="/wiki/PGC_39058" title="PGC 39058">PGC 39058</a></li> <li><a class="mw-selflink selflink">S5 1803+784</a></li> <li><a href="/wiki/S5_2007%2B777" title="S5 2007+777">S5 2007+777</a></li> <li><a href="/wiki/UGC_9391" title="UGC 9391">UGC 9391</a></li></ul> </div></td></tr></tbody></table><div></div></td></tr><tr><td colspan="2" class="navbox-list navbox-odd" style="padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th id="Galaxy_clusters19" scope="row" class="navbox-group" style="width:151px;background: #ddddff;"><a href="/wiki/Galaxy_cluster" title="Galaxy cluster">Galaxy clusters</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Abell_2218" title="Abell 2218">Abell 2218</a></li> <li><a href="/wiki/CL1358%2B62" title="CL1358+62">CL1358+62</a></li> <li><a href="/wiki/Draco_Supercluster" title="Draco Supercluster">Draco Supercluster</a></li></ul> </div></td></tr></tbody></table><div></div></td></tr><tr><td colspan="2" class="navbox-list navbox-odd" style="padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th id="Astronomical_events52" scope="row" class="navbox-group" style="width:151px;background: #ddddff;"><a href="/wiki/Transient_astronomical_event" class="mw-redirect" title="Transient astronomical event">Astronomical events</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Swift_J1644%2B57" title="Swift J1644+57">Swift J1644+57</a></li> <li><a href="/wiki/SN_2005B" title="SN 2005B">SN 2005B</a></li> <li><a href="/wiki/SN_2016aps" title="SN 2016aps">SN 2016aps</a></li></ul> </div></td></tr></tbody></table><div></div></td></tr><tr><td class="navbox-abovebelow" colspan="2" style="text-align: center;"><div><span class="noviewer" typeof="mw:File"><span title="Category"><img alt="" src="//upload.wikimedia.org/wikipedia/en/thumb/9/96/Symbol_category_class.svg/16px-Symbol_category_class.svg.png" decoding="async" width="16" height="16" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/en/thumb/9/96/Symbol_category_class.svg/23px-Symbol_category_class.svg.png 1.5x, //upload.wikimedia.org/wikipedia/en/thumb/9/96/Symbol_category_class.svg/31px-Symbol_category_class.svg.png 2x" data-file-width="180" data-file-height="185" /></span></span> <a href="/wiki/Category:Draco_(constellation)" 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