HD 202206 b 參考資料 导航菜单The CORALIE survey for southern extra-solar planets. XIII. A pair of planets around HD202206 or a circumbinary planet?Bibcode:2005A&A...440..751CarXiv:astro-ph/0411512doi:10.1051/0004-6361:20042376原始内容Exoplanets Galore!原始内容Definition of a "Planet"arXiv:0710.5667v1astro-phThe CORALIE survey for southern extra-solar planets VIII. The very low-mass companions of HD 141937, HD 162020, HD 168443, HD 202206: Brown dwarfs or "superplanets"?Bibcode:2002A&A...390..267UarXiv:astro-ph/0202458doi:10.1051/0004-6361:20020685原始内容21h 14m 57.79s，−20°47′20.1″

棕矮星摩羯座


HD 202206系外行星棕矮星核融合吸積












































HD 202206 b

太陽系外行星

太陽系外行星列表
母恆星
母恆星HD 202206
星座摩羯座
赤經(α)21h 14m 57.79s
赤緯(δ)-20° 47′ 20.1″
距離151.14 ly (46.3 pc)
光譜類型G6V
軌道參數
半长轴(a)0.83[1]AU
軌道離心率(e)0.435 ± 0.001[1]
公轉週期(P)255.87 ± 0.06[1]d
物理性质
最小质量(m sin i)17.4[1]MJ
發現
發現時間2000年[2]
發現者
米歇爾·麥耶等人
發現方法都卜勒光譜學
發現地點
 法国
發表論文已確認

HD 202206 b是一個環繞恆星 HD 202206 的次恆星天體，距離地球約151光年。該天體可能是系外行星或棕矮星，但目前仍未確認[1]。該天體質量至少是木星的17.4倍，這超過了讓星體核心中的氫可經由核融合變成氘的質量下限。氘燃燒是否會發生是國際天文聯會的太陽系外行星工作小組界定氣體巨行星和棕矮星的方式，照此定義 HD 202206 b 應屬於棕矮星[3]。另一方面，行星形成的吸積模擬顯示它可以形成最高25到30倍木星質量，而且這類天體仍屬於行星[4][5]。



參考資料




  1. ^ 1.01.11.21.31.4 Correia, A.; 等. The CORALIE survey for southern extra-solar planets. XIII. A pair of planets around HD202206 or a circumbinary planet?. Astronomy and Astrophysics. 2005, 440 (2): 751–758. Bibcode:2005A&A...440..751C. arXiv:astro-ph/0411512. doi:10.1051/0004-6361:20042376. （原始内容 (abstract)存档于2005-10-23）.  引文格式1维护：显式使用等标签 (link)


  2. ^ Exoplanets Galore!. European Southern Observatory. 4 May 2000 [8 August 2009]. （原始内容存档于2009年2月28日）. 


  3. ^ Definition of a "Planet". Working Group on Extrasolar Planets (WGESP) of the International Astronomical Union. [2009-07-04]. 


  4. ^ Mordasini, C.; 等. Giant Planet Formation by Core Accretion. 2007. arXiv:0710.5667v1 [astro-ph].  引文使用过时参数version (帮助); 不支持的参数使用了arXiv (帮助) 引文格式1维护：显式使用等标签 (link)


  5. ^ Udry, S.; 等. The CORALIE survey for southern extra-solar planets VIII. The very low-mass companions of HD 141937, HD 162020, HD 168443, HD 202206: Brown dwarfs or "superplanets"?. Astronomy and Astrophysics. 2002, 390 (1): 267–279. Bibcode:2002A&A...390..267U. arXiv:astro-ph/0202458. doi:10.1051/0004-6361:20020685. （原始内容 (abstract)存档于2006-06-01）.  引文格式1维护：显式使用等标签 (link)


天球赤道座標：星图21h 14m 57.79s，−20°47′20.1″






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