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{{Starbox begin
| name = WASP-121
}}
{{Starbox observe
| epoch = J2000.0
| constell = [[船尾座]]<ref name="Constellation">{{cite web |author=Staff |title=Finding the constellation which contains given sky coordinates |url=http://djm.cc/constellation.html |date= |work=djm.cc |accessdate=3 August 2017 |archive-date=2019-08-15 |archive-url=https://web.archive.org/web/20190815143107/http://djm.cc/constellation.html |dead-url=no }}</ref>
| ra = {{RA|07|10|24.0595}}<ref name="Gaia2016"/>
| dec = {{DEC|−39|05|50.562}}<ref name="Gaia2016"/>
| appmag_v = 10.4
}}
{{Starbox character
| class = F6V<ref name="EP-2015" /><ref name="WASP-2017">{{cite web |author=Staff |title=WASP Planets |url=https://wasp-planets.net/wasp-planets/ |date=2017 |work=wasp-planets.net |accessdate=3 August 2017 |archive-date=2019-04-18 |archive-url=https://web.archive.org/web/20190418060828/https://wasp-planets.net/wasp-planets/ |dead-url=no }}</ref>
| appmag_1_passband = B
| appmag_1 = 11.00<ref name="SIMBAD">{{cite simbad
| title=WASP-12
| access-date=3 August 2017 }}</ref>
| appmag_2_passband = V
| appmag_2 = 10.51<ref name="SIMBAD" />
| appmag_3_passband = J
| appmag_3 = 9.625<ref name="SIMBAD" />
| appmag_4_passband = H
| appmag_4 = 9.439<ref name="SIMBAD" />
| appmag_5_passband = K
| appmag_5 = 9.374 <ref name="SIMBAD" />
| variable =
}}
{{Starbox astrometry
| radial_v =
| prop_mo_ra = {{val|−2.993|1.007}}<ref name="Gaia2016"/>
| prop_mo_dec = {{val|25.086|0.918}}<ref name="Gaia2016"/>
| parallax = 3.82
| p_error = 0.25
| parallax_footnote = <ref name="Gaia2016"/>
| absmag_v =
}}
{{Starbox detail
| age =
| metal = 0.13<ref name="EP-2015">{{cite web |author=Staff |title=Planet WASP-121 b |url=http://exoplanet.eu/catalog/wasp-121_b/ |date=2015 |work=exoplanet.eu |accessdate=3 August 2017 |archive-date=2018-09-20 |archive-url=https://web.archive.org/web/20180920150105/http://exoplanet.eu/catalog/wasp-121_b/ |dead-url=no }}</ref>
| mass = 1.353<ref name="EP-2015" />
| radius = 1.458<ref name="EP-2015" />
| rotation =
| luminosity =
| temperature = 6460.0<ref name="EP-2015" />
}}
{{Starbox catalog
| names = TYC 7630-352-1, Gaia 5565050251402363648, 2MASS J07102406-3905506, 1SWASP J071024.05-390550.5<ref name="SIMBAD" />
}}
{{Starbox reference
| Simbad = WASP-121
| EPE = WASP-121
}}
{{Starbox end}}

'''WASP-121'''是一个[[视星等]]为 10.4 的[[恒星]]，位于[[船尾座]]。<ref name="Constellation" /> WASP-121 的[[质量]]和[[半径]]都类似[[太阳]]。它的行星[[WASP-121b]]环绕着 WASP-121 ，每 1.27 天转一圈。<ref name="EP-2015" /> WASP-121b是第一个被发现在[[平流层]]包含[[水]]的系外行星。<ref name="NASA-20170802" /><ref name="NAT-20170802" />

==行星系统==
[[File:PIA22565-Exoplanet-WASP121b-ComputerSimViews-20180809.jpg|thumb|center|400px|<center>WASP-121b - 计算机模拟视图（2018年8月）</center>]]

2015年，通过[[系外行星侦测法#凌日法]]发现了[[系外行星]][[WASP-121b]]，它的轨道环绕WASP-121。<ref name="EP-2015" /> WASP-121b 是一个[[热木星]]，也是一个[[系外行星]] 。它的质量是[[木星]]的 1.18 倍，而半径是木星的 1.81 倍。<ref name="WASP-2017" /><ref name="NASA-20170802" /> 这个行星每 1.27天环绕 WASP-121一圈。<ref name="WASP-2017" /><ref name="NASA-20170802" /> 人们在WASP-121b的[[平流层]]中发现了[[水|高温的水分子]]。<ref name="EP-2015" /><ref name="NASA-20170802">{{cite web |last1=Landau |first1=Elizabeth |last2=Villard |first2=Ray |title=Hubble Detects Exoplanet with Glowing Water Atmosphere |url=https://www.jpl.nasa.gov/news/news.php?feature=6909 |date=2 August 2017 |work=[[NASA]] |accessdate=2 August 2017 |archive-date=2019-05-10 |archive-url=https://web.archive.org/web/20190510010257/https://www.jpl.nasa.gov/news/news.php?feature=6909 |dead-url=no }}</ref><ref name="NAT-20170802">{{cite journal |author=Evans, Thomas M.|display-authors=etal |title=An ultrahot gas-giant exoplanet with a stratosphere |date=2 August 2017 |journal=[[Nature (journal)|Nature]] |volume=548 |issue=7665 |pages=58–61 |doi=10.1038/nature23266 |arxiv = 1708.01076 |bibcode = 2017Natur.548...58E |pmid=28770846}}</ref><ref>{{cite arXiv|eprint=2005.09631|last1=Mikal-Evans|first1=Thomas|last2=Sing|first2=David K.|last3=Kataria|first3=Tiffany|last4=Wakeford|first4=Hannah R.|last5=Mayne|first5=Nathan J.|last6=Lewis|first6=Nikole K.|last7=Barstow|first7=Joanna K.|last8=Spake|first8=Jessica J.|title=Confirmation of water emission in the dayside spectrum of the ultrahot Jupiter WASP-121b|year=2020|class=astro-ph.EP}}</ref>

{{OrbitboxPlanet begin}}
{{OrbitboxPlanet
| exoplanet = [[WASP-121b|b]]
| mass = 1.184<ref name="EP-2015" /><ref name="WASP-2017" />
| period = 1.275<ref name="EP-2015" />
| semimajor = 0.02544<ref name="EP-2015" />
| eccentricity = 0.0<ref name="EP-2015" />
| inclination = 87.6<ref name="EP-2015" />
| radius = 1.81<ref name="WASP-2017" />
}}
{{Orbitbox end}}

==画廊==
[[File:HD189733b.jpg|thumb|center|300px|艺术家笔下的一个[[热木星]]的画像]]

==参见==
* [[SuperWASP]]
* {{le|WASP-33b}}

==参考资料==
{{Reflist|refs=

<ref name="Gaia2016">{{cite journal | title=Gaia Data Release 1. Summary of the astrometric, photometric, and survey properties | url=https://www.aanda.org/articles/aa/full_html/2016/11/aa29512-16/aa29512-16.html | journal=Astronomy and Astrophysics | volume=595 | at=A2 | year=2016 | last1=Brown | first1=A. G. A | last2=Vallenari | first2=A | last3=Prusti | first3=T | last4=De Bruijne | first4=J. H.J | last5=Mignard | first5=F | last6=Drimmel | first6=R | last7=Babusiaux | first7=C | last8=Bailer-Jones | first8=C. A.L | last9=Bastian | first9=U | last10=Biermann | first10=M | last11=Evans | first11=D. W | last12=Eyer | first12=L | last13=Jansen | first13=F | last14=Jordi | first14=C | last15=Katz | first15=D | last16=Klioner | first16=S. A | last17=Lammers | first17=U | last18=Lindegren | first18=L | last19=Luri | first19=X | last20=o'Mullane | first20=W | last21=Panem | first21=C | last22=Pourbaix | first22=D | last23=Randich | first23=S | last24=Sartoretti | first24=P | last25=Siddiqui | first25=H. I | last26=Soubiran | first26=C | last27=Valette | first27=V | last28=Van Leeuwen | first28=F | last29=Walton | first29=N. A | last30=Aerts | first30=C | display-authors=1 | arxiv=1609.04172 | bibcode=2016A&A...595A...2G | doi=10.1051/0004-6361/201629512 | access-date=2020-09-27 | archive-date=2018-01-28 | archive-url=https://web.archive.org/web/20180128124757/https://www.aanda.org/articles/aa/full_html/2016/11/aa29512-16/aa29512-16.html | dead-url=no }}[http://webviz.u-strasbg.fr/viz-bin/VizieR-5?-out.add=.&-source=I/337/tgas&recno=1570953 Gaia Data Release 1 catalog entry] {{Wayback|url=http://webviz.u-strasbg.fr/viz-bin/VizieR-5?-out.add=.&-source=I%2F337%2Ftgas&recno=1570953 |date=20210709182227 }}</ref>

}}

==外部链接==
* [https://wasp-planets.net/wasp-planets/ SuperWASP Wide Angle Search for Planets: The Planets] {{Wayback|url=https://wasp-planets.net/wasp-planets/ |date=20160205102307 }}, [[SuperWASP]].
{{Sky|07|10|24.0|-|39|05|51|900}}

{{Stars of Puppis}}
{{portal bar|天文学|太空}}

[[Category:船尾座]]
[[Category:行星凌变星]]
[[Category:F型主序星]]
[[Category:2MASS天体]]

WASP-121 - 版本历史

imported>SchlurcherBot：​Bot: http → https

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