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HD 16417 b

HD 16417 b
太陽系外行星 太陽系外行星列表

HD 16417 b 的軌道半徑與水星軌道比較。
母恆星
母恆星 天炉座λ²
星座 天爐座
赤经 (α) 02h 36m 58.61s[1]
赤纬 (δ) –34° 34′ 40.7″[1]
距離84.1 ± 0.9[1] ly (25.8 ± 0.3[1] pc)
光譜類型 G1V
軌道參數
半長軸 (a) 0.14 ± 0.01 AU
軌道離心率 (e) 0.20 ± 0.09
公轉週期 (P) 17.24 ± 0.01 d (0.04720 ± 0.00003 y)
近星點時間 (T0) 2450099.74 ± 3.3 JD
物理性质
最小质量(m sin i)0.069 ± 0.007 MJ
(21.93 ± 2.22 M🜨)
發現
發現時間 2009年2月23日
發現者 O’Toole 等人
發現方法 徑向速度
發現地點 英澳天文台
發表論文 已發表論文[2]
其他名稱
數據庫參考
太陽系外行星
百科全書
data
SIMBADdata

HD 16417 b,或稱為天炉座λ2bλ2 Fornacis b),是一個距離地球約84光年的太陽系外行星,位於天爐座,母恆星是視星等6等的黃矮星天炉座λ²。該行星的質量下限只有木星的7%,和海王星相當。此外,該行星與母恆星距離相當近,因此預期它的表面溫度相當高。該行星是2009年2月23日在天爐座發現的第三顆系外行星,以徑向速度法發現。

參考資料

[编辑]
  1. ^ 1.0 1.1 1.2 1.3 van Leeuwen, F. Validation of the new Hipparcos reduction. Astronomy and Astrophysics. 2007, 474 (2): 653–664 [2013-02-20]. Bibcode:2007A&A...474..653V. arXiv:0708.1752可免费查阅. doi:10.1051/0004-6361:20078357. (原始内容存档于2016-04-02).  Vizier catalog entry 页面存档备份,存于互联网档案馆
  2. ^ O’Toole, Simon; et al. A Neptune-mass Planet Orbiting the Nearby G Dwarf HD16417. The Astrophysical Journal. 2009, 697 (2): 1263–1268. Bibcode:2009ApJ...697.1263O. arXiv:0902.4024可免费查阅. doi:10.1088/0004-637X/697/2/1263. 


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HD 16417 b
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