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{{redirect-distinguish|太平山|太平山 (disambiguation){{!}太平山}}
{{Infobox planet
| name = HD 212771 b /太平山
| discovery_ref = <ref name="Johnson2010"/>
| discoverer = 約翰等人
| discovery_site = [[凱克天文台]]
| discovered = 2010-03-17
| discovery_method = [[都卜勒光譜學|都卜勒光譜]]

| orbit_ref = <ref name="Luhn2019"/>
| semimajor = {{val|1.19|0.13|ul=AU}}
| eccentricity = {{val|0.076|0.051}}
| period = {{val|380.7|1.4|u=days}}
| time_periastron = {{val|2454920|52|ul=JD}}
| arg_peri = {{val|29|65|u=º}}
| semi-amplitude = {{val|50.0|5.8|ul=m/s}}
| star = [[HD 212771]]
| physical_ref = <ref name="Luhn2019"/>
| mass = {{val|2.39|0.27|p=≥|ul=Jupiter mass}}

}}

'''HD 212771 b'''是在星座[[寶瓶座]]<ref name="Johnson2010"/>的一顆圍繞[[恆星光譜#G型|G型]]恆星[[HD 212771]]運行的[[太陽系外行星]]，距離大約364光年<ref name="Gaia2016"/>。

== 名稱 ==
HD 212771 b的名稱是'''太平山'''（{{langx|en|'''Victoriapeak'''}}）。[[太平山 (香港)|太平山]]（{{langx|en|'''Victoria peak'''}}）是[[香港島]]上的最高點，在[[國際天文學聯合會|IAU]]成立100周年的[[IAU100太陽系外世界命名活動]]由[[香港]]地區的活動中，選出以之命名為「太平山」<ref>{{Cite web|url=http://www.nameexoworlds.iau.org/final-results|title=Approved names|website=NameExoworlds|language=en|access-date=2020-01-02|archive-date=2019-12-19|archive-url=https://web.archive.org/web/20191219084750/http://www.nameexoworlds.iau.org/final-results|dead-url=no}}</ref><ref>{{Cite web|url=https://www.iau.org/news/pressreleases/detail/iau1912/|title=International Astronomical Union {{!}} IAU|website=www.iau.org|access-date=2020-01-02|archive-date=2020-04-08|archive-url=https://web.archive.org/web/20200408020100/https://www.iau.org/news/pressreleases/detail/iau1912/|dead-url=no}}</ref>。

== 性質 ==

=== 軌道 ===
HD 212771 b的軌道週期和距離都與[[地球]]相似，分別為380天和1.19[[天文單位|AU]]。與長週期氣態巨星相比，它的軌道幾乎是完美的圓形軌道。

=== 特徵 ===
{{Planetary radius|align=right|Exoplanet=HD 212771 /太平山|radius=118}}

由於軌道參數未知，這顆行星的真實質量尚不清楚，估計其質量至少是[[木星]]質量的2.39倍。HD 212771 b的半徑也未知，所以[[NASA]]的「系外行星之眼」給出的估計半徑是木星的1.18倍<ref>{{Cite web|title=Eyes On Exoplanets – Exoplanet Exploration: Planets Beyond our Solar System|url=https://exoplanets.nasa.gov/eyes-on-exoplanets/#/planet/HD_212771_b/|access-date=2021-06-06|website=exoplanets.nasa.gov|archive-date=2024-03-24|archive-url=https://web.archive.org/web/20240324092547/https://exoplanets.nasa.gov/eyes-on-exoplanets/#/planet/HD_212771_b/|dead-url=no}}</ref>。

== 相關條目 ==
* [[HD 4313 b]]
* [[HD 181342 b]]
* [[HD 206610 b]]
* [[HD 180902 b]]
* [[HD 136418 b]]

== 參考資料 ==
{{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 | 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 | journal=Astronomy and Astrophysics | volume=595 | at=A2 | year=2016 | arxiv=1609.04172 | bibcode=2016A&A...595A...2G | doi=10.1051/0004-6361/201629512 | s2cid=1828208 | access-date=2024-04-27 | archive-date=2020-10-15 | archive-url=https://web.archive.org/web/20201015143930/https://www.aanda.org/articles/aa/abs/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=733014 Gaia Data Release 1 catalog entry] {{Wayback|url=http://webviz.u-strasbg.fr/viz-bin/VizieR-5?-out.add=.&-source=I/337/tgas&recno=733014 |date=20220626113942 }}</ref>

<ref name="Johnson2010">{{cite journal | title=Retired a Stars and Their Companions. IV. Seven Jovian Exoplanets from Keck Observatory | last1=Johnson | first1=John Asher | last2=Howard | first2=Andrew W. | last3=Bowler | first3=Brendan P. | last4=Henry | first4=Gregory W. | last5=Marcy | first5=Geoffrey W. | last6=Wright | first6=Jason T. | last7=Fischer | first7=Debra A. | last8=Isaacson | first8=Howard | display-authors=1 | journal=Publications of the Astronomical Society of the Pacific | volume=122 | issue=892 | pages=701–711 | year=2010 | arxiv=1003.3445 | bibcode=2010PASP..122..701J | bibcode-access=free | doi=10.1086/653809 | doi-access=free }}</ref>

<ref name="Luhn2019">{{cite journal | title=Retired A Stars and Their Companions. VIII. 15 New Planetary Signals around Subgiants and Transit Parameters for California Planet Search Planets with Subgiant Hosts | last1=Luhn | first1=Jacob K. | last2=Bastien | first2=Fabienne A. | last3=Wright | first3=Jason T. | last4=Johnson | first4=John A. | last5=Howard | first5=Andrew W. | last6=Isaacson | first6=Howard | display-authors=1 | journal=The Astronomical Journal | volume=157 | issue=4 | at=149 | year=2019 | arxiv=1811.03043 | bibcode=2019AJ....157..149L | doi=10.3847/1538-3881/aaf5d0 | s2cid=102486961 | doi-access=free }}</ref>

}}

== 外部連結 ==
* {{cite encyclopedia | url=https://exoplanet.eu/catalog/hd_212771_b--659/ | encyclopedia=[[Extrasolar Planets Encyclopaedia]] | title=HD 212771 b | date=1995 | access-date=2024-04-27 | archive-date=2024-05-01 | archive-url=https://web.archive.org/web/20240501152101/https://exoplanet.eu/catalog/hd_212771_b--659/ | dead-url=no }}

{{Sky|22|27|03|-|17|15|49}}
{{寶瓶座}}

{{DEFAULTSORT:HD 212771 b}}
[[Category:2009年發現的系外行星]]
[[Category:徑向速度法發現的系外行星]]
[[Category:寶瓶座]]
[[Category:巨行星]]
[[Category:有專有名稱的系外行星]]

HD 212771 b - 版本历史

imported>Willy1018-bot：​BOTR：批量替換所有lang-xx模板為langx模板

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