HD 141937

HD 141937
星座 てんびん座
見かけの等級 (mv) 7.25
位置
元期:J2000.0
赤経 (RA, α)  15h 52m 17.54714s[1]
赤緯 (Dec, δ) −18° 26′ 09.8433″[1]
視線速度 (Rv) -2.57 km/s[1]
固有運動 (μ) 赤経: 96.83 ミリ秒/年[1]
赤緯: 22.97 ミリ秒/年[1]
年周視差 (π) 30.96 ミリ秒[1]
距離 105.3 光年
（32.30 パーセク）
絶対等級 (MV) 4.7
物理的性質
半径 0.95 R☉[2]
質量 1.10 M☉[2]
表面重力 18 G
スペクトル分類 G1 V
光度 0.94 L☉[2]
表面温度 5,842 K[2]
金属量[Fe/H] 0.10（太陽比）[2]
年齢 1.0 ×109 年[2]
他のカタログでの名称
BD-17 4442, HIP 77740, SAO 159551
■Template （■ノート ■解説） ■Project

HD 141937は、てんびん座の方角に約105光年の距離にある恒星である。視等級は7.25であり、肉眼では見ることができない。太陽とよく似た黄色の主系列星に分類され、質量は太陽質量に近く、半径も太陽とほぼ同じである。年齢は太陽より若い。

大きさの比較
太陽 HD 141937
太陽 Exoplanet


惑星系

2002年、ラ・シヤ天文台における視線速度法の観測から、巨大な木星型惑星がHD 141937の周りを公転しているのが発見された[3]。

HD 141937の惑星[4]
名称
（恒星に近い順） 		質量 軌道長半径
（天文単位） 		公転周期
(日) 		軌道離心率 軌道傾斜角 半径
b > 9.316 ± 0.329 MJ 1.4877 ± 0.0097 653.22 ± 1.21 0.41 ± 0.01 — —

出典

  1. ^ a b c d e f “HD 141937 -- Star”. SIMBAD. CDS. 2017年9月23日閲覧。
  2. ^ a b c d e f Ghezzi, L.; et al. (2010-09), “Stellar Parameters and Metallicities of Stars Hosting Jovian and Neptunian Mass Planets: A Possible Dependence of Planetary Mass on Metallicity”, Astrophysical Journal 720 (2): 1290-1302, Bibcode: 2010ApJ...720.1290G, doi:10.1088/0004-637X/720/2/1290 
  3. ^ Udry, S.; et al. (2002). “The CORALIE survey for southern extra-solar planets VIII. The very low-mass companions of HD141937, HD162020, HD168443, HD202206: brown dwarfs or "superplanets"?”. Astronomy and Astrophysics 390 (1): 267–279. doi:10.1051/0004-6361:20020685. 
  4. ^ Liu, Kang; et al. (2014-11), “Precise determination of fundamental parameters of six exoplanet host stars and their planets”, Research in Astronomy and Astrophysics 14 (11): 1447-1457, Bibcode: 2014RAA....14.1447L, doi:10.1088/1674-4527/14/11/008 

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外部リンク

座標: 星図 15h 52m 17.54714s, −18° 26′ 09.834″

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