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href="https://de.wikipedia.org/wiki/WASP-18_b" title="WASP-18 b – German" lang="de" hreflang="de" data-title="WASP-18 b" data-language-autonym="Deutsch" data-language-local-name="German" class="interlanguage-link-target"><span>Deutsch</span></a></li><li class="interlanguage-link interwiki-es mw-list-item"><a href="https://es.wikipedia.org/wiki/WASP-18b" title="WASP-18b – Spanish" lang="es" hreflang="es" data-title="WASP-18b" data-language-autonym="Español" data-language-local-name="Spanish" class="interlanguage-link-target"><span>Español</span></a></li><li class="interlanguage-link interwiki-fr mw-list-item"><a href="https://fr.wikipedia.org/wiki/WASP-18_b" title="WASP-18 b – French" lang="fr" hreflang="fr" data-title="WASP-18 b" data-language-autonym="Français" data-language-local-name="French" class="interlanguage-link-target"><span>Français</span></a></li><li class="interlanguage-link interwiki-ko mw-list-item"><a href="https://ko.wikipedia.org/wiki/WASP-18b" title="WASP-18b – Korean" lang="ko" hreflang="ko" data-title="WASP-18b" data-language-autonym="한국어" data-language-local-name="Korean" class="interlanguage-link-target"><span>한국어</span></a></li><li class="interlanguage-link interwiki-id mw-list-item"><a href="https://id.wikipedia.org/wiki/WASP-18b" title="WASP-18b – Indonesian" lang="id" hreflang="id" data-title="WASP-18b" data-language-autonym="Bahasa Indonesia" data-language-local-name="Indonesian" class="interlanguage-link-target"><span>Bahasa Indonesia</span></a></li><li class="interlanguage-link interwiki-it mw-list-item"><a href="https://it.wikipedia.org/wiki/WASP-18_b" title="WASP-18 b – Italian" lang="it" hreflang="it" data-title="WASP-18 b" data-language-autonym="Italiano" data-language-local-name="Italian" class="interlanguage-link-target"><span>Italiano</span></a></li><li class="interlanguage-link interwiki-ka mw-list-item"><a href="https://ka.wikipedia.org/wiki/WASP-18b" title="WASP-18b – Georgian" lang="ka" hreflang="ka" data-title="WASP-18b" data-language-autonym="ქართული" data-language-local-name="Georgian" class="interlanguage-link-target"><span>ქართული</span></a></li><li class="interlanguage-link interwiki-lv mw-list-item"><a href="https://lv.wikipedia.org/wiki/WASP-18b" title="WASP-18b – Latvian" lang="lv" hreflang="lv" data-title="WASP-18b" data-language-autonym="Latviešu" data-language-local-name="Latvian" class="interlanguage-link-target"><span>Latviešu</span></a></li><li class="interlanguage-link interwiki-ja mw-list-item"><a href="https://ja.wikipedia.org/wiki/WASP-18b" title="WASP-18b – Japanese" lang="ja" hreflang="ja" data-title="WASP-18b" data-language-autonym="日本語" data-language-local-name="Japanese" class="interlanguage-link-target"><span>日本語</span></a></li><li class="interlanguage-link interwiki-pl mw-list-item"><a href="https://pl.wikipedia.org/wiki/WASP-18_b" title="WASP-18 b – Polish" lang="pl" hreflang="pl" data-title="WASP-18 b" data-language-autonym="Polski" data-language-local-name="Polish" class="interlanguage-link-target"><span>Polski</span></a></li><li class="interlanguage-link interwiki-pt mw-list-item"><a href="https://pt.wikipedia.org/wiki/WASP-18b" title="WASP-18b – Portuguese" lang="pt" hreflang="pt" data-title="WASP-18b" data-language-autonym="Português" data-language-local-name="Portuguese" class="interlanguage-link-target"><span>Português</span></a></li><li class="interlanguage-link interwiki-ru mw-list-item"><a href="https://ru.wikipedia.org/wiki/WASP-18_b" title="WASP-18 b – Russian" lang="ru" hreflang="ru" data-title="WASP-18 b" data-language-autonym="Русский" data-language-local-name="Russian" class="interlanguage-link-target"><span>Русский</span></a></li><li class="interlanguage-link interwiki-ta mw-list-item"><a href="https://ta.wikipedia.org/wiki/%E0%AE%B5%E0%AE%BE%E0%AE%B8%E0%AF%8D%E0%AE%AA%E0%AF%8D-18%E0%AE%AA%E0%AE%BF" title="வாஸ்ப்-18பி – Tamil" lang="ta" hreflang="ta" data-title="வாஸ்ப்-18பி" data-language-autonym="தமிழ்" data-language-local-name="Tamil" class="interlanguage-link-target"><span>தமிழ்</span></a></li><li class="interlanguage-link interwiki-th mw-list-item"><a href="https://th.wikipedia.org/wiki/%E0%B8%94%E0%B8%B1%E0%B8%9A%E0%B9%80%E0%B8%9A%E0%B8%B4%E0%B8%A5%E0%B8%A2%E0%B8%B9%E0%B9%80%E0%B8%AD%E0%B9%80%E0%B8%AD%E0%B8%AA%E0%B8%9E%E0%B8%B5-18%E0%B8%9A%E0%B8%B5" title="ดับเบิลยูเอเอสพี-18บี – Thai" lang="th" hreflang="th" data-title="ดับเบิลยูเอเอสพี-18บี" data-language-autonym="ไทย" data-language-local-name="Thai" class="interlanguage-link-target"><span>ไทย</span></a></li><li class="interlanguage-link interwiki-tr mw-list-item"><a href="https://tr.wikipedia.org/wiki/WASP-18b" title="WASP-18b – Turkish" lang="tr" hreflang="tr" data-title="WASP-18b" data-language-autonym="Türkçe" data-language-local-name="Turkish" class="interlanguage-link-target"><span>Türkçe</span></a></li><li class="interlanguage-link interwiki-uk mw-list-item"><a href="https://uk.wikipedia.org/wiki/WASP-18b" title="WASP-18b – Ukrainian" lang="uk" hreflang="uk" data-title="WASP-18b" data-language-autonym="Українська" data-language-local-name="Ukrainian" class="interlanguage-link-target"><span>Українська</span></a></li><li class="interlanguage-link interwiki-vi mw-list-item"><a href="https://vi.wikipedia.org/wiki/WASP-18B" title="WASP-18B – Vietnamese" lang="vi" hreflang="vi" data-title="WASP-18B" data-language-autonym="Tiếng Việt" data-language-local-name="Vietnamese" class="interlanguage-link-target"><span>Tiếng Việt</span></a></li><li class="interlanguage-link interwiki-zh mw-list-item"><a href="https://zh.wikipedia.org/wiki/WASP-18b" title="WASP-18b – Chinese" lang="zh" hreflang="zh" data-title="WASP-18b" data-language-autonym="中文" data-language-local-name="Chinese" class="interlanguage-link-target"><span>中文</span></a></li> </ul> <div class="after-portlet after-portlet-lang"><span class="wb-langlinks-edit wb-langlinks-link"><a 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.sky-coordinates-display{font-size:85%}</style><span class="sky-coordinates-display plainlinks nourlexpansion"><a href="/wiki/Celestial_coordinate_system" class="mw-redirect" title="Celestial coordinate system">Coordinates</a>: <span typeof="mw:File"><span title="Sky map"><img alt="Sky map" src="//upload.wikimedia.org/wikipedia/commons/thumb/e/e4/Jupiter_and_moon.png/20px-Jupiter_and_moon.png" decoding="async" width="20" height="20" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/e/e4/Jupiter_and_moon.png/30px-Jupiter_and_moon.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/e/e4/Jupiter_and_moon.png/40px-Jupiter_and_moon.png 2x" data-file-width="128" data-file-height="128" /></span></span> <a rel="nofollow" class="external text" href="http://www.wikisky.org/?ra=1.6236111111111&de=-45.678055555556&zoom=6&show_grid=1&show_constellation_lines=1&show_constellation_boundaries=1&show_const_names=1&show_galaxies=1&img_source=IMG_all">01<sup>h</sup> 37<sup>m</sup> 25<sup>s</sup>, −45° 40′ 41″</a></span></div></div> </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">Extrasolar planet that has an orbital period of less than one day</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"><caption class="infobox-title fn org">WASP-18b</caption><tbody><tr><td colspan="2" class="infobox-image"><span class="mw-default-size" typeof="mw:File/Frameless"><a href="/wiki/File:Exoplanet_Comparison_WASP-18_b.png" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/5/54/Exoplanet_Comparison_WASP-18_b.png/290px-Exoplanet_Comparison_WASP-18_b.png" decoding="async" width="290" height="134" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/5/54/Exoplanet_Comparison_WASP-18_b.png/435px-Exoplanet_Comparison_WASP-18_b.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/5/54/Exoplanet_Comparison_WASP-18_b.png/580px-Exoplanet_Comparison_WASP-18_b.png 2x" data-file-width="1040" data-file-height="480" /></a></span><div class="infobox-caption">Size comparison of WASP-18b with Jupiter.</div></td></tr><tr><th colspan="2" class="infobox-header" style="background-color:#E0CCFF">Discovery<sup id="cite_ref-Hellier2009_1-0" class="reference"><a href="#cite_note-Hellier2009-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup></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">Hellier et al. (<a href="/wiki/SuperWASP" class="mw-redirect" title="SuperWASP">SuperWASP</a>)</td></tr><tr><th scope="row" class="infobox-label" style="max-width:11em;">Discovery date</th><td class="infobox-data">August 27, 2009</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/Methods_of_detecting_exoplanets" title="Methods of detecting exoplanets">Detection method</a></div></th><td class="infobox-data"><a href="/wiki/Astronomical_transit" title="Astronomical transit">Transit</a> (including secondary eclipses)</td></tr><tr><th colspan="2" class="infobox-header" style="background-color:#E0CCFF"><a href="/wiki/Osculating_orbit" title="Osculating orbit">Orbital characteristics</a><sup id="cite_ref-Cortés-Zuleta2020_2-0" class="reference"><a href="#cite_note-Cortés-Zuleta2020-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup></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/Semi-major_and_semi-minor_axes" title="Semi-major and semi-minor axes">Semi-major axis</a></div></th><td class="infobox-data">0.02024 ± 0.00030 AU (3,028,000 ± 45,000 km)</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"><span class="nowrap"><span data-sort-value="6997510000000000000♠"></span>0.0051<span style="margin-left:0.3em;"><span style="display:inline-block;margin-bottom:-0.3em;vertical-align:-0.4em;line-height:1.2em;font-size:85%;text-align:right;">+0.0070<br />−0.0037</span></span></span></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"><span class="nowrap"><span data-sort-value="7004813414726720000♠"></span>0.941<span style="margin-left:.25em;">452</span><span style="margin-left:.25em;">23</span>(24) <a href="/wiki/Day" title="Day">d</a></span><br />22.59485352 <a href="/wiki/Hour" title="Hour">h</a></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"><span class="nowrap"><span data-sort-value="7000145734992541526♠"></span>83.5°<span style="margin-left:0.3em;"><span style="display:inline-block;margin-bottom:-0.3em;vertical-align:-0.4em;line-height:1.2em;font-size:85%;text-align:right;">+2.0°<br />−1.6°</span></span></span></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 periastron</a></div></th><td class="infobox-data"><span class="nowrap"><span data-sort-value="2999851647013580481♠"></span>−85°<span style="margin-left:0.3em;"><span style="display:inline-block;margin-bottom:-0.3em;vertical-align:-0.4em;line-height:1.2em;font-size:85%;text-align:right;">+72°<br />−96°</span></span></span></td></tr><tr><th scope="row" class="infobox-label" style="max-width:11em;"><span class="nowrap"><a href="/wiki/Amplitude" title="Amplitude">Semi-amplitude</a></span></th><td class="infobox-data"><span class="nowrap"><span data-sort-value="7003181400000000000♠"></span>1814<span style="margin-left:0.3em;"><span style="display:inline-block;margin-bottom:-0.3em;vertical-align:-0.4em;line-height:1.2em;font-size:85%;text-align:right;">+23<br />−24</span></span> <a href="/wiki/Metre_per_second" title="Metre per second">m/s</a></span></td></tr><tr><th scope="row" class="infobox-label" style="max-width:11em;">Star</th><td class="infobox-data"><a href="/wiki/WASP-18" title="WASP-18">WASP-18</a></td></tr><tr><th colspan="2" class="infobox-header" style="background-color:#E0CCFF"><span class="anchor" id="Infobox_Physical_characteristics"></span>Physical characteristics<sup id="cite_ref-Cortés-Zuleta2020_2-1" class="reference"><a href="#cite_note-Cortés-Zuleta2020-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup></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/Mean_radius_(astronomy)" title="Mean radius (astronomy)">Mean radius</a></div></th><td class="infobox-data"><span class="nowrap"><span data-sort-value="7000124000000000000♠"></span>1.240<span style="margin-left:0.3em;margin-right:0.15em;">±</span>0.079 <a href="/wiki/Jupiter_radius" title="Jupiter radius"><i>R</i><sub>J</sub></a></span></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"><span class="nowrap"><span data-sort-value="7001102000000000000♠"></span>10.20<span style="margin-left:0.3em;margin-right:0.15em;">±</span>0.35 <a href="/wiki/Jupiter_mass" title="Jupiter mass"><i>M</i><sub>J</sub></a></span></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"><span class="nowrap"><span data-sort-value="7003660000000000000♠"></span>6.6<span style="margin-left:0.3em;"><span style="display:inline-block;margin-bottom:-0.3em;vertical-align:-0.4em;line-height:1.2em;font-size:85%;text-align:right;">+1.2<br />−1.1</span></span> <a href="/wiki/Gram_per_cubic_centimetre" title="Gram per cubic centimetre">g/cm<sup>3</sup></a></span></td></tr><tr><th scope="row" class="infobox-label" style="max-width:11em;"><a href="/wiki/Temperature" title="Temperature">Temperature</a></th><td class="infobox-data"><span class="nowrap"><span data-sort-value="7003302900000000000♠"></span>3,029<span style="margin-left:0.3em;margin-right:0.15em;">±</span>50 <a href="/wiki/Kelvin" title="Kelvin">K</a></span> (2,756 °C; 4,993 °F)<sup id="cite_ref-Wong2020_3-0" class="reference"><a href="#cite_note-Wong2020-3"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup><br /><span class="nowrap"><span data-sort-value="7003278100000000000♠"></span>2,781<span style="margin-left:0.3em;"><span style="display:inline-block;margin-bottom:-0.3em;vertical-align:-0.4em;line-height:1.2em;font-size:85%;text-align:right;">+25<br />−13</span></span> K</span> (2,508 °C; 4,546 °F)<sup id="cite_ref-Coulombe2023_4-0" class="reference"><a href="#cite_note-Coulombe2023-4"><span class="cite-bracket">[</span>4<span class="cite-bracket">]</span></a></sup></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> <p><b>WASP-18b</b> is an <a href="/wiki/Exoplanet" title="Exoplanet">exoplanet</a> that is notable for having an orbital period of less than one day. It has a mass equal to 10 <a href="/wiki/Jupiter_mass" title="Jupiter mass">Jupiter masses</a>,<sup id="cite_ref-Hellier2009_1-1" class="reference"><a href="#cite_note-Hellier2009-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup> just below the boundary line between planets and <a href="/wiki/Brown_dwarf" title="Brown dwarf">brown dwarfs</a> (about 13 Jupiter masses). Due to <a href="/wiki/Tidal_acceleration#Tidal_deceleration" title="Tidal acceleration">tidal deceleration</a>, it is expected to spiral toward and eventually merge with its host star, <a href="/wiki/WASP-18" title="WASP-18">WASP-18</a>, in less than a million years.<sup id="cite_ref-Hellier2009_1-2" class="reference"><a href="#cite_note-Hellier2009-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup> The planet is approximately 3.1 million <a href="/wiki/Kilometre" title="Kilometre">km</a> (1.9 million <a href="/wiki/Mile" title="Mile">mi</a>; 0.021 <a href="/wiki/Astronomical_unit" title="Astronomical unit">AU</a>) from its star, which is about 400 <a href="/wiki/Light-year" title="Light-year">light-years</a> (120 <a href="/wiki/Parsec" title="Parsec">parsecs</a>) from Earth. A team led by Coel Hellier, a professor of astrophysics at <a href="/wiki/Keele_University" title="Keele University">Keele University</a> in England, discovered the exoplanet in 2009.<sup id="cite_ref-Hellier2009_1-3" class="reference"><a href="#cite_note-Hellier2009-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup> </p><p>Scientists at Keele and at the <a href="/wiki/University_of_Maryland" class="mw-redirect" title="University of Maryland">University of Maryland</a> are working to understand whether the discovery of this planet so shortly before its expected demise (with less than 0.1% of its lifetime remaining) was fortuitous, or whether tidal dissipation by WASP-18 is actually much less efficient than astrophysicists typically assume.<sup id="cite_ref-Hellier2009_1-4" class="reference"><a href="#cite_note-Hellier2009-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-Hamilton_5-0" class="reference"><a href="#cite_note-Hamilton-5"><span class="cite-bracket">[</span>5<span class="cite-bracket">]</span></a></sup> Observations made over the next decade should yield a measurement of the rate at which WASP-18b's orbit is decaying.<sup id="cite_ref-Thompson_6-0" class="reference"><a href="#cite_note-Thompson-6"><span class="cite-bracket">[</span>6<span class="cite-bracket">]</span></a></sup> </p><p>The closest example of a similar situation in the <a href="/wiki/Solar_System" title="Solar System">Solar System</a> is <a href="/wiki/Mars" title="Mars">Mars</a>' moon <a href="/wiki/Phobos_(moon)" title="Phobos (moon)">Phobos</a>. Phobos orbits Mars at a distance of only about 9,000 km (5,600 mi), 40 times closer than the Moon is to the Earth<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> and is expected to be destroyed in about eleven million years.<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> </p><p>The planet's dayside temperature, as measured in 2020, is 3,029 ± 50 <a href="/wiki/Kelvin" title="Kelvin">K</a> (2,755.8 ± 50.0 <a href="/wiki/Celsius" title="Celsius">°C</a>; 4,992.5 ± 90.0 <a href="/wiki/Fahrenheit" title="Fahrenheit">°F</a>).<sup id="cite_ref-Wong2020_3-1" class="reference"><a href="#cite_note-Wong2020-3"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup> A 2023 study found an average dayside temperature of <span class="nowrap"><span data-sort-value="7003278100000000000♠"></span>2,781<span style="margin-left:0.3em;"><span style="display:inline-block;margin-bottom:-0.3em;vertical-align:-0.4em;line-height:1.2em;font-size:85%;text-align:right;">+25<br />−13</span></span> K</span> (2,508 °C; 4,546 °F).<sup id="cite_ref-Coulombe2023_4-1" class="reference"><a href="#cite_note-Coulombe2023-4"><span class="cite-bracket">[</span>4<span class="cite-bracket">]</span></a></sup> </p><p>A study in 2012, utilizing the <a href="/wiki/Rossiter%E2%80%93McLaughlin_effect" title="Rossiter–McLaughlin effect">Rossiter–McLaughlin effect</a>, determined that the planetary orbit is well aligned with the equatorial plane of the star, with a misalignment equal to 13<span style="margin-left:0.3em;margin-right:0.15em;">±</span>7°.<sup id="cite_ref-Albrecht2012_9-0" class="reference"><a href="#cite_note-Albrecht2012-9"><span class="cite-bracket">[</span>9<span class="cite-bracket">]</span></a></sup> </p><p>A 2017 study detected <a href="/wiki/Carbon_monoxide" title="Carbon monoxide">carbon monoxide</a> in the planet's atmosphere, without signs of <a href="/wiki/Water_vapor" title="Water vapor">water vapor</a>.<sup id="cite_ref-Sheppard2017_10-0" class="reference"><a href="#cite_note-Sheppard2017-10"><span class="cite-bracket">[</span>10<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-NASA-20171129a_11-0" class="reference"><a href="#cite_note-NASA-20171129a-11"><span class="cite-bracket">[</span>11<span class="cite-bracket">]</span></a></sup> However, in 2023, the <a href="/wiki/James_Webb_Space_Telescope" title="James Webb Space Telescope">James Webb Space Telescope</a> detected water vapor in the planet's atmosphere.<sup id="cite_ref-Coulombe2023_4-2" class="reference"><a href="#cite_note-Coulombe2023-4"><span class="cite-bracket">[</span>4<span class="cite-bracket">]</span></a></sup><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> <figure class="mw-halign-center" typeof="mw:File/Thumb"><a href="/wiki/File:PIA22087-Exoplanet-Wasp18b-COinStratosphere-20171129.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/8/8c/PIA22087-Exoplanet-Wasp18b-COinStratosphere-20171129.jpg/300px-PIA22087-Exoplanet-Wasp18b-COinStratosphere-20171129.jpg" decoding="async" width="300" height="254" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/8/8c/PIA22087-Exoplanet-Wasp18b-COinStratosphere-20171129.jpg/450px-PIA22087-Exoplanet-Wasp18b-COinStratosphere-20171129.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/8/8c/PIA22087-Exoplanet-Wasp18b-COinStratosphere-20171129.jpg/600px-PIA22087-Exoplanet-Wasp18b-COinStratosphere-20171129.jpg 2x" data-file-width="2700" data-file-height="2282" /></a><figcaption><div class="center" style="width:auto; margin-left:auto; margin-right:auto;">Exoplanet WASP-18b − high <a href="/wiki/Carbon_monoxide" title="Carbon monoxide">carbon monoxide</a> levels detected in <a href="/wiki/Stratosphere" title="Stratosphere">stratosphere</a> (artist concept)<sup id="cite_ref-NASA-20171129a_11-1" class="reference"><a href="#cite_note-NASA-20171129a-11"><span class="cite-bracket">[</span>11<span class="cite-bracket">]</span></a></sup></div></figcaption></figure> <div class="mw-heading mw-heading2"><h2 id="See_also">See also</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=WASP-18b&action=edit&section=1" title="Edit section: See also"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li><a href="/wiki/SuperWASP" class="mw-redirect" title="SuperWASP">SuperWASP</a></li></ul> <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=WASP-18b&action=edit&section=2" title="Edit section: References"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <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-Hellier2009-1"><span class="mw-cite-backlink">^ <a href="#cite_ref-Hellier2009_1-0"><sup><i><b>a</b></i></sup></a> <a href="#cite_ref-Hellier2009_1-1"><sup><i><b>b</b></i></sup></a> <a href="#cite_ref-Hellier2009_1-2"><sup><i><b>c</b></i></sup></a> <a href="#cite_ref-Hellier2009_1-3"><sup><i><b>d</b></i></sup></a> <a href="#cite_ref-Hellier2009_1-4"><sup><i><b>e</b></i></sup></a></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="CITEREFHellierAndersonCollier_CameronGillon2009" class="citation journal cs1">Hellier, Coel; 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.navbox-title{background-color:#ddf}.mw-parser-output .navbox-subgroup .navbox-group,.mw-parser-output .navbox-subgroup .navbox-abovebelow{background-color:#e6e6ff}.mw-parser-output .navbox-even{background-color:#f7f7f7}.mw-parser-output .navbox-odd{background-color:transparent}.mw-parser-output .navbox .hlist td dl,.mw-parser-output .navbox .hlist td ol,.mw-parser-output .navbox .hlist td ul,.mw-parser-output .navbox td.hlist dl,.mw-parser-output .navbox td.hlist ol,.mw-parser-output .navbox td.hlist ul{padding:0.125em 0}.mw-parser-output .navbox .navbar{display:block;font-size:100%}.mw-parser-output .navbox-title .navbar{float:left;text-align:left;margin-right:0.5em}body.skin--responsive .mw-parser-output .navbox-image img{max-width:none!important}@media print{body.ns-0 .mw-parser-output .navbox{display:none!important}}</style></div><div role="navigation" class="navbox" aria-labelledby="Constellation_of_Phoenix" style="padding:3px"><table class="nowraplinks hlist mw-collapsible autocollapse navbox-inner" style="border-spacing:0;background:transparent;color:inherit"><tbody><tr><th scope="col" class="navbox-title" colspan="2" style="text-align: center;"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1129693374"><style data-mw-deduplicate="TemplateStyles:r1239400231">.mw-parser-output .navbar{display:inline;font-size:88%;font-weight:normal}.mw-parser-output .navbar-collapse{float:left;text-align:left}.mw-parser-output .navbar-boxtext{word-spacing:0}.mw-parser-output .navbar ul{display:inline-block;white-space:nowrap;line-height:inherit}.mw-parser-output .navbar-brackets::before{margin-right:-0.125em;content:"[ "}.mw-parser-output .navbar-brackets::after{margin-left:-0.125em;content:" ]"}.mw-parser-output .navbar li{word-spacing:-0.125em}.mw-parser-output .navbar a>span,.mw-parser-output .navbar a>abbr{text-decoration:inherit}.mw-parser-output .navbar-mini abbr{font-variant:small-caps;border-bottom:none;text-decoration:none;cursor:inherit}.mw-parser-output .navbar-ct-full{font-size:114%;margin:0 7em}.mw-parser-output .navbar-ct-mini{font-size:114%;margin:0 4em}html.skin-theme-clientpref-night .mw-parser-output .navbar li a abbr{color:var(--color-base)!important}@media(prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .navbar li a abbr{color:var(--color-base)!important}}@media print{.mw-parser-output .navbar{display:none!important}}</style><div class="navbar plainlinks hlist navbar-mini"><ul><li class="nv-view"><a href="/wiki/Template:Phoenix_(constellation)" title="Template:Phoenix (constellation)"><abbr title="View this template">v</abbr></a></li><li class="nv-talk"><a href="/wiki/Template_talk:Phoenix_(constellation)" title="Template talk:Phoenix (constellation)"><abbr title="Discuss this template">t</abbr></a></li><li class="nv-edit"><a href="/wiki/Special:EditPage/Template:Phoenix_(constellation)" title="Special:EditPage/Template:Phoenix (constellation)"><abbr title="Edit this template">e</abbr></a></li></ul></div><div id="Constellation_of_Phoenix" style="font-size:114%;margin:0 4em"><a href="/wiki/Phoenix_(constellation)" title="Phoenix (constellation)">Constellation of Phoenix</a></div></th></tr><tr><td class="navbox-abovebelow" colspan="2" style="text-align: center;"><div> <ul><li><a href="/wiki/List_of_stars_in_Phoenix" title="List of stars in Phoenix">List of stars in Phoenix</a></li> <li><a href="/wiki/Phoenix_in_Chinese_astronomy" title="Phoenix in Chinese astronomy">Phoenix in Chinese astronomy</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="text-align: center;;width:55px"><a href="/wiki/Star" title="Star">Stars</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/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/Alpha_Phoenicis" title="Alpha Phoenicis">α (Ankaa)</a></li> <li><a href="/wiki/Beta_Phoenicis" title="Beta Phoenicis">β</a></li> <li><a href="/wiki/Gamma_Phoenicis" title="Gamma Phoenicis">γ</a></li> <li><a href="/wiki/Delta_Phoenicis" title="Delta Phoenicis">δ</a></li> <li><a href="/wiki/Epsilon_Phoenicis" title="Epsilon Phoenicis">ε</a></li> <li><a href="/wiki/Zeta_Phoenicis" title="Zeta Phoenicis">ζ (Wurren)</a></li> <li><a href="/wiki/Eta_Phoenicis" title="Eta Phoenicis">η</a></li> <li><a href="/wiki/Theta_Phoenicis" class="mw-redirect" title="Theta Phoenicis">θ</a></li> <li><a href="/wiki/Iota_Phoenicis" title="Iota Phoenicis">ι</a></li> <li><a href="/wiki/Kappa_Phoenicis" title="Kappa Phoenicis">κ</a></li> <li><a href="/wiki/Lambda1_Phoenicis" title="Lambda1 Phoenicis">λ<sup>1</sup></a></li> <li><a href="/wiki/Lambda2_Phoenicis" class="mw-redirect" title="Lambda2 Phoenicis">λ<sup>2</sup></a></li> <li><a href="/wiki/Mu_Phoenicis" title="Mu Phoenicis">μ</a></li> <li><a href="/wiki/Nu_Phoenicis" title="Nu Phoenicis">ν</a></li> <li><a href="/wiki/Xi_Phoenicis" title="Xi Phoenicis">ξ</a></li> <li><a href="/wiki/Pi_Phoenicis" class="mw-redirect" title="Pi Phoenicis">π</a></li> <li><a href="/wiki/Rho_Phoenicis" title="Rho Phoenicis">ρ</a></li> <li><a href="/wiki/Sigma_Phoenicis" class="mw-redirect" title="Sigma Phoenicis">σ</a></li> <li><a href="/wiki/Tau_Phoenicis" class="mw-redirect" title="Tau Phoenicis">τ</a></li> <li><a href="/wiki/Upsilon_Phoenicis" class="mw-redirect" title="Upsilon Phoenicis">υ</a></li> <li><a href="/wiki/Phi_Phoenicis" title="Phi Phoenicis">φ</a></li> <li><a href="/wiki/Chi_Phoenicis" class="mw-redirect" title="Chi Phoenicis">χ</a></li> <li><a href="/wiki/Psi_Phoenicis" title="Psi Phoenicis">ψ</a></li> <li><a href="/wiki/Omega_Phoenicis" class="mw-redirect" title="Omega Phoenicis">ω</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-even" style="padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/w/index.php?title=RV_Phoenicis&action=edit&redlink=1" class="new" title="RV Phoenicis (page does not exist)">RV</a></li> <li><a href="/wiki/SX_Phoenicis" title="SX Phoenicis">SX</a></li> <li><a href="/w/index.php?title=YZ_Phoenicis&action=edit&redlink=1" class="new" title="YZ Phoenicis (page does not exist)">YZ</a></li> <li><a href="/wiki/AD_Phoenicis" title="AD Phoenicis">AD</a></li> <li><a href="/wiki/AE_Phoenicis" title="AE Phoenicis">AE</a></li> <li><a href="/wiki/AI_Phoenicis" title="AI Phoenicis">AI</a></li> <li><a href="/w/index.php?title=AW_Phoenicis&action=edit&redlink=1" class="new" title="AW Phoenicis (page does not exist)">AW</a></li> <li><a href="/wiki/AZ_Phoenicis" title="AZ Phoenicis">AZ</a></li> <li><a href="/wiki/BB_Phoenicis" title="BB Phoenicis">BB</a></li> <li><a href="/wiki/BD_Phoenicis" title="BD Phoenicis">BD</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-odd" style="padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/HD_142" title="HD 142">6</a></li> <li><a href="/w/index.php?title=HD_469&action=edit&redlink=1" class="new" title="HD 469 (page does not exist)">23</a></li> <li><a href="/w/index.php?title=HD_1483&action=edit&redlink=1" class="new" title="HD 1483 (page does not exist)">73</a></li> <li><a href="/w/index.php?title=HD_2490&action=edit&redlink=1" class="new" title="HD 2490 (page does not exist)">109</a></li> <li><a href="/w/index.php?title=HD_2529&action=edit&redlink=1" class="new" title="HD 2529 (page does not exist)">111</a></li> <li><a href="/w/index.php?title=HD_2726&action=edit&redlink=1" class="new" title="HD 2726 (page does not exist)">120</a></li> <li><a href="/w/index.php?title=HD_3158&action=edit&redlink=1" class="new" title="HD 3158 (page does not exist)">140</a></li> <li><a href="/w/index.php?title=HD_3303&action=edit&redlink=1" class="new" title="HD 3303 (page does not exist)">148</a></li> <li><a href="/w/index.php?title=HD_3488&action=edit&redlink=1" class="new" title="HD 3488 (page does not exist)">162</a></li> <li><a href="/w/index.php?title=HD_3750&action=edit&redlink=1" class="new" title="HD 3750 (page does not exist)">171</a></li> <li><a href="/w/index.php?title=HD_4293&action=edit&redlink=1" class="new" title="HD 4293 (page does not exist)">198</a></li> <li><a href="/w/index.php?title=HD_4304&action=edit&redlink=1" class="new" title="HD 4304 (page does not exist)">202</a></li> <li><a href="/wiki/HD_4391" title="HD 4391">209</a></li> <li><a href="/w/index.php?title=HD_4737&action=edit&redlink=1" class="new" title="HD 4737 (page does not exist)">229</a></li> <li><a href="/w/index.php?title=HD_6245&action=edit&redlink=1" class="new" title="HD 6245 (page does not exist)">299</a></li> <li><a href="/w/index.php?title=HD_7082&action=edit&redlink=1" class="new" title="HD 7082 (page does not exist)">350</a></li> <li><a href="/w/index.php?title=HD_8651&action=edit&redlink=1" class="new" title="HD 8651 (page does not exist)">408</a></li> <li><a href="/w/index.php?title=HD_8681&action=edit&redlink=1" class="new" title="HD 8681 (page does not exist)">411</a></li> <li><a href="/w/index.php?title=HD_9414&action=edit&redlink=1" class="new" title="HD 9414 (page does not exist)">443</a></li> <li><a href="/w/index.php?title=HD_9544&action=edit&redlink=1" class="new" title="HD 9544 (page does not exist)">447</a></li> <li><a href="/w/index.php?title=HD_10934&action=edit&redlink=1" class="new" title="HD 10934 (page does not exist)">519</a></li> <li><a href="/w/index.php?title=HD_11022&action=edit&redlink=1" class="new" title="HD 11022 (page does not exist)">524</a></li> <li><a href="/w/index.php?title=HD_11332&action=edit&redlink=1" class="new" title="HD 11332 (page does not exist)">537</a></li> <li><a href="/wiki/HD_12055" title="HD 12055">574</a></li> <li><a href="/w/index.php?title=HD_12296&action=edit&redlink=1" class="new" title="HD 12296 (page does not exist)">588</a></li> <li><a href="/w/index.php?title=HD_13336&action=edit&redlink=1" class="new" title="HD 13336 (page does not exist)">632</a></li> <li><a href="/w/index.php?title=HD_13423&action=edit&redlink=1" class="new" title="HD 13423 (page does not exist)">636</a></li> <li><a href="/w/index.php?title=HD_13940&action=edit&redlink=1" class="new" title="HD 13940 (page does not exist)">659</a></li> <li><a href="/w/index.php?title=HD_14509&action=edit&redlink=1" class="new" title="HD 14509 (page does not exist)">686</a></li> <li><a href="/w/index.php?title=HD_14832&action=edit&redlink=1" class="new" title="HD 14832 (page does not exist)">698</a></li> <li><a href="/w/index.php?title=HD_15064&action=edit&redlink=1" class="new" title="HD 15064 (page does not exist)">706</a></li> <li><a href="/w/index.php?title=HD_220802&action=edit&redlink=1" class="new" title="HD 220802 (page does not exist)">8910</a></li> <li><a href="/w/index.php?title=HD_221051&action=edit&redlink=1" class="new" title="HD 221051 (page does not exist)">8920</a></li> <li><a href="/w/index.php?title=HD_221323&action=edit&redlink=1" class="new" title="HD 221323 (page does not exist)">8929</a></li> <li><a href="/wiki/HD_222095" title="HD 222095">8959</a></li> <li><a href="/w/index.php?title=HD_222803&action=edit&redlink=1" class="new" title="HD 222803 (page does not exist)">8993</a></li> <li><a href="/w/index.php?title=HD_223011&action=edit&redlink=1" class="new" title="HD 223011 (page does not exist)">9001</a></li> <li><a href="/w/index.php?title=HD_224022&action=edit&redlink=1" class="new" title="HD 224022 (page does not exist)">9046</a></li> <li><a href="/w/index.php?title=HD_224750&action=edit&redlink=1" class="new" title="HD 224750 (page does not exist)">9077</a></li> <li><a href="/w/index.php?title=HD_224865&action=edit&redlink=1" class="new" title="HD 224865 (page does not exist)">9082</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-even" style="padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/HD_2039" title="HD 2039">2039</a></li> <li><a href="/wiki/HD_5388" title="HD 5388">5388</a></li> <li><a href="/wiki/HD_6434" title="HD 6434">6434 (Nenque)</a></li> <li><a href="/wiki/HD_8535" title="HD 8535">8535</a></li> <li><a href="/w/index.php?title=HD_9895&action=edit&redlink=1" class="new" title="HD 9895 (page does not exist)">9895</a></li> <li><a href="/w/index.php?title=HD_11421&action=edit&redlink=1" class="new" title="HD 11421 (page does not exist)">11421</a></li> <li><a href="/w/index.php?title=HD_13218&action=edit&redlink=1" class="new" title="HD 13218 (page does not exist)">13218</a></li> <li><a href="/w/index.php?title=HD_13387&action=edit&redlink=1" class="new" title="HD 13387 (page does not exist)">13387</a></li> <li><a href="/w/index.php?title=HD_223549&action=edit&redlink=1" class="new" title="HD 223549 (page does not exist)">223549</a></li> <li><a href="/w/index.php?title=HD_224782&action=edit&redlink=1" class="new" title="HD 224782 (page does not exist)">224782</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/CD-44_170" title="CD-44 170">CD-44 170</a></li> <li><a href="/w/index.php?title=BPM_30551&action=edit&redlink=1" class="new" title="BPM 30551 (page does not exist)">BPM 30551</a></li> <li><a href="/wiki/HE_0107-5240" title="HE 0107-5240">HE 0107-5240</a></li> <li><a href="/wiki/NGC_405" title="NGC 405">NGC 405</a></li> <li><a href="/wiki/WASP-4" title="WASP-4">WASP-4</a></li> <li><a href="/wiki/WASP-5" title="WASP-5">WASP-5</a></li> <li><a href="/wiki/WASP-18" title="WASP-18">WASP-18</a></li> <li><a href="/wiki/WASP-29" title="WASP-29">WASP-29</a></li> <li><a href="/wiki/WASP-96" title="WASP-96">WASP-96</a></li> <li><a href="/wiki/WD_2359-434" class="mw-redirect" title="WD 2359-434">WD 2359-434</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="Exoplanets" 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-even" style="padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/HD_142_b" title="HD 142 b">HD 142 b</a></li> <li><a href="/wiki/HD_2039_b" title="HD 2039 b">HD 2039 b</a></li> <li><a href="/wiki/HD_6434_b" title="HD 6434 b">HD 6434 b</a></li> <li><a href="/wiki/HD_8535_b" title="HD 8535 b">HD 8535 b</a></li> <li><a href="/wiki/HIP_65Ab" title="HIP 65Ab">HIP 65Ab</a></li> <li><a href="/wiki/WASP-4b" title="WASP-4b">WASP-4b</a></li> <li><a href="/wiki/WASP-5b" title="WASP-5b">WASP-5b</a></li> <li><a class="mw-selflink selflink">WASP-18b</a></li> <li><a href="/wiki/WASP-96b" title="WASP-96b">WASP-96b</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-odd" style="padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/NGC_25" title="NGC 25">25</a></li> <li><a href="/wiki/NGC_28" title="NGC 28">28</a></li> <li><a href="/wiki/NGC_31" title="NGC 31">31</a></li> <li><a href="/wiki/NGC_37" title="NGC 37">37</a></li> <li><a href="/wiki/NGC_87" title="NGC 87">87</a></li> <li><a href="/wiki/NGC_88" title="NGC 88">88</a></li> <li><a href="/wiki/NGC_89" title="NGC 89">89</a></li> <li><a href="/wiki/NGC_92" title="NGC 92">92</a></li> <li><a href="/wiki/NGC_98" title="NGC 98">98</a></li> <li><a href="/wiki/NGC_119" title="NGC 119">119</a></li> <li><a href="/wiki/NGC_159" title="NGC 159">159</a></li> <li><a href="/wiki/NGC_212" title="NGC 212">212</a></li> <li><a href="/wiki/NGC_238" title="NGC 238">238</a></li> <li><a href="/wiki/NGC_312" title="NGC 312">312</a></li> <li><a href="/wiki/NGC_319" title="NGC 319">319</a></li> <li><a href="/wiki/NGC_322" title="NGC 322">322</a></li> <li><a href="/wiki/NGC_323" title="NGC 323">323</a></li> <li><a href="/wiki/NGC_324" title="NGC 324">324</a></li> <li><a href="/wiki/NGC_328" title="NGC 328">328</a></li> <li><a href="/wiki/NGC_348" title="NGC 348">348</a></li> <li><a href="/wiki/NGC_368" title="NGC 368">368</a></li> <li><a href="/wiki/NGC_454" title="NGC 454">454</a></li> <li><a href="/wiki/NGC_482" title="NGC 482">482</a></li> <li><a href="/wiki/NGC_625" title="NGC 625">625</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/Phoenix_Dwarf" title="Phoenix Dwarf">Phoenix Dwarf</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_clusters" 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-odd" style="padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/El_Gordo_(galaxy_cluster)" title="El Gordo (galaxy cluster)">El Gordo</a></li> <li><a href="/wiki/Phoenix_Cluster" title="Phoenix Cluster">Phoenix Cluster</a></li> <li><a href="/wiki/Robert%27s_Quartet" title="Robert's Quartet">Robert's Quartet</a></li></ul> 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