编辑“︁HD 154857 b”︁

{{Planetbox begin 
| name = HD 154857 b
}}
{{Planetbox star
| star = [[HD 154857]]
| constell = [[天壇座]]
| RA = {{RA|17|11|15.7219}}
| DEC = {{DEC|–56|40|50.865}}
| dist_ly = 209 ± 10
| dist_pc = 64 ± 3
| class = G5V
}} 
{{Planetbox orbit 
| semimajor = 1.2±0.2
| semimajor_gigameter = 180
| periastron = 0.64
| periastron_gigameter = 100
| apastron = 1.8
| apastron_gigameter = 270
| eccentricity = 0.47±0.02
| period = 409±1
| period_year = 1.12
| period_megasecond = 35.3
| arg_peri = 59±4
| t_peri = 2450346±5
| semi-amp = 50.4±1
}}
{{Planetbox character
| mass = &gt;1.8±0.4
| mass_earth =&gt;570±100
}} 
{{Planetbox discovery 
| discovery_date = 2004年
| discoverers = 克里斯·麥卡錫等人<br>
| discovery_site = {{flag|Australia}}[[英澳天文台]]<ref>{{Cite web |url=http://www.phys.unsw.edu.au/~cgt/planet/AAPS_Home.html |title=AAPS |accessdate=2014-01-27 |archive-date=2014-08-06 |archive-url=https://web.archive.org/web/20140806021502/http://www.phys.unsw.edu.au/~cgt/planet/AAPS_Home.html |dead-url=no }}</ref>
| discovery_method = [[徑向速度]]
| discovery_status = 已發表論文
}}
{{Planetbox reference
| star=HD+154857
| planet=b
}}
{{Planetbox end}}

'''HD 154857 b'''是一顆距離地球約209光年的太陽系外行星，位於[[天壇座]]。該行星是在高離心率軌道上的[[氣體巨行星]]。天文學家使用澳洲英澳天文台的[[英澳望遠鏡]] UCLE [[光譜儀]]進行觀測而發現了它<ref name="McCarthy2004"/><ref name="O'Toole2007"/>。

==參考資料==
{{Reflist|colwidth=30em|refs=

<ref name="McCarthy2004">{{cite journal | url=http://iopscience.iop.org/0004-637X/617/1/575/fulltext/ | title=Multiple Companions to HD 154857 and HD 160691 | last1=McCarthy | first1=Chris | last2=Butler | first2=R. Paul | last3=Tinney | first3=C. G. | last4=Jones | first4=Hugh R. A. | last5=Marcy | first5=Geoffrey W. | last6=Carter | first6=Brad | last7=Penny | first7=Alan J. | last8=Fischer | first8=Debra A. | display-authors=1 | journal=The Astrophysical Journal | volume=617 | issue=1 | pages=575–579 | year=2004 | arxiv=astro-ph/0409335 | bibcode=2004ApJ...617..575M | doi=10.1086/425214 }}</ref>

<ref name="O'Toole2007">{{cite journal | url=http://www.iop.org/EJ/article/0004-637X/660/2/1636/70956.html | title=New Planets around Three G Dwarfs | last1=O'Toole | first1=Simon J. | last2=Butler | first2=R. Paul | last3=Tinney | first3=C. G. | last4=Jones | first4=Hugh R. A. | last5=Marcy | first5=Geoffrey W. | last6=Carter | first6=Brad | last7=McCarthy | first7=Chris | last8=Bailey | first8=Jeremy | last9=Penny | first9=Alan J. | display-authors=1 | journal=The Astrophysical Journal | volume=660 | issue=2 | pages=1636–1641 | year=2007 | arxiv=astro-ph/0702213 | bibcode=2007ApJ...660.1636O | doi=10.1086/513563 | access-date=2014-01-27 | archive-date=2020-01-03 | archive-url=https://web.archive.org/web/20200103235406/http://www.iop.org/EJ/article/0004-637X/660/2/1636/70956.html | dead-url=no }}</ref>

}}

==外部連結==
* {{cite web|url=http://exoplanet.eu/star.php?st=HD+154857|title=HD 154857 b|work=The Extrasolar Planets Encyclopaedia|accessdate=2008-07-21|archive-date=2012-05-16|archive-url=https://web.archive.org/web/20120516091802/http://exoplanet.eu/star.php?st=HD+154857}}
* {{cite web|url=http://www.extrasolar.net/planettour.asp?StarCatId=normal&PlanetId=272|title=HD 154857 b|work=Extrasolar Visions|accessdate=2008-07-21|deadurl=yes|archiveurl=https://web.archive.org/web/20101006114350/http://extrasolar.net/planettour.asp?StarCatID=normal&PlanetID=272|archivedate=2010-10-06}}
* [https://web.archive.org/web/20071203100742/http://media4.obspm.fr/exoplanets/base/planete.php?etoile=HD+154857&planete=b Simulation HD 154857 b]
* [http://news.bbc.co.uk/1/hi/sci/tech/1065910.stm news.bbc.co.uk] {{Wayback|url=http://news.bbc.co.uk/1/hi/sci/tech/1065910.stm |date=20060824000838 }}
{{Sky|17|11|15.7219|-|56|40|50.865|223.55}}

[[Category:天壇座]]
[[Category:2004年發現的系外行星]]
[[Category:類木行星]]
[[Category:徑向速度法發現的系外行星]]