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HD 6434 b - 版本历史
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<p><b>新页面</b></p><div>{{Planetbox begin<br />
| name=HD 6434 b<br />
}}<br />
{{Planetbox star<br />
| star=[[HD 6434]]<br />
| constell=[[鳳凰座]]<br />
| RA={{RA|01|04|40.1511}}<br />
| DEC={{DEC|–39|29|17.583}}<br />
| dist_ly=131.5<br />
| dist_pc=40.34<br />
| class=G2/G3V<br />
}}<br />
{{Planetbox orbit<br />
| semimajor=0.14<br />
| semimajor_gigameter = 21<br />
| periastron = 0.12<br />
| periastron_gigameter = 18<br />
| apastron = 0.16<br />
| apastron_gigameter = 24<br />
| eccentricity=0.17±0.03<br />
| period=21.998±0.009<br />
| period_year = 0.060226<br />
| speed = 69<br />
| arg_peri=156±11<br />
| t_peri=2,451,490.8<br/>±0.6<br />
| semi-amp=34.2±1.1<br />
}}<br />
{{Planetbox character<br />
| mass=&gt;0.39<br />
| mass_earth = &gt;120<br />
}}<br />
{{Planetbox discovery<br />
| discovery_date=2000年8月7日<br />
| discovery_method=[[都卜勒光譜學]]<br />
| discovery_site=[[利克－卡內基系外行星巡天]]<br />
| discoverers=[[戴狄爾·魁若茲]]等人<br />
| discovery_status=已發表論文<br />
}}<br />
{{Planetbox reference<br />
| star = HD+6434<br />
| planet = b<br />
}}<br />
{{Planetbox end}}<br />
<br />
'''HD 6434 b'''是一顆位於[[鳳凰座]]的[[太陽系外行星]]，母恆星是 [[HD 6434]]。該行星的[[質量下限]]大約是木星的一半。它和母恆星的距離只有0.14天文單位，因此公轉周期只有22日。它和[[飛馬座51b]]等典型的[[熱木星]]不同的是，它的軌道並非接近圓形，而是[[軌道離心率|橢圓形]]<ref name="Mayor2004"/>。<br />
<br />
藉著研究[[依巴谷卫星]]的[[天文測量]]資料，一群科學家認為該行星的[[軌道傾角]]是179.9°（幾乎完全面對地球觀測者），質量是木星的196倍。如果是這樣的話，HD 6434 b 就應該是[[紅矮星]]。不過根據統計的結果，它是紅矮星的可能性極低。但因為它的軌道傾角目前未知，至今無法知道它的[[真實質量]]。因此目前該天體仍很可能是行星。<br />
<br />
== 參見 ==<br />
* [[鯨魚座94b]]<br />
<br />
== 參考資料 ==<br />
{{Reflist|colwidth=30em|refs=<br />
<br />
<ref name="Mayor2004">{{cite journal | url=http://www.aanda.org/articles/aa/full/2004/07/aa0250/aa0250.html | title=The CORALIE survey for southern extra-solar planets XII. Orbital solutions for 16 extra-solar planets discovered with CORALIE | last1=Mayor | first1=M. | last2=Udry | first2=S. | last3=Naef | first3=D. | last4=Pepe | first4=F. | last5=Queloz | first5=D. | last6=Santos | first6=N. C. | last7=Burnet | first7=M. | display-authors=1 | journal=Astronomy and Astrophysics | volume=415 | issue=1 | pages=391–402 | year=2004 | arxiv=astro-ph/0310316 | bibcode=2004A&A...415..391M | doi=10.1051/0004-6361:20034250 | access-date=2012-11-22 | archive-date=2019-06-16 | archive-url=https://web.archive.org/web/20190616102507/https://www.aanda.org/articles/aa/full/2004/07/aa0250/aa0250.html | dead-url=no }}</ref><br />
<br />
}}<br />
*{{cite web | title=European Southern Observatory: Six Extrasolar Planets Discovered | url=http://www.spaceref.com/news/viewpr.html?pid=2365 | date=7 August 2000 | work= | publisher=SpaceRef Interactive Inc. | accessdate=15 August 2009 }}<br />
<br />
== 外部連結 ==<br />
* {{cite web | url=http://media4.obspm.fr/exoplanets/base/etoile.php?nom=HD+6434 | title=HD 6434 | work=Exoplanets | access-date=2012-11-22 | archive-url=https://web.archive.org/web/20091124235230/http://media4.obspm.fr/exoplanets/base/etoile.php?nom=HD+6434 | archive-date=2009-11-24 | dead-url=yes }}<br />
* {{cite web | url=http://www.extrasolar.net/planettour.asp?StarCatId=normal&PlanetId=141 | title=HD 6434 b | work=Extrasolar Visions | deadurl=yes | archiveurl=https://web.archive.org/web/20041115233901/http://www.extrasolar.net/planettour.asp?StarCatID=normal&PlanetID=141 | archivedate=2004-11-15 | accessdate=2012-11-22 }}<br />
{{Sky|01|04|40.1511|-|39|29|17.583|131.5}}<br />
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{{DEFAULTSORT:Hd 6434 B}}<br />
[[Category:2000年發現的系外行星]]<br />
[[Category:熱木星]]<br />
[[Category:鳳凰座]]<br />
[[Category:徑向速度法發現的系外行星]]</div>
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