HD 32518




























































































































HD 32518
觀測資料
曆元 J2000.0

星座
鹿豹座[1][2]

星官

赤經
 5h 9m 36.7s[1][2][3]

赤緯
 +69° 38′ 22″[1][2][3]

視星等（V）
 6.41[1][2]
特性
光谱分类 K1III[1][2]
视星等 (B) 7.537
视星等 (J) 4.531
视星等 (H) 3.992
视星等 (K) 3.911
U−B 色指数 1.03[1][2]
B−V 色指数 1.11[1][2]
R−I 色指数
[1][2]
天体测定
径向速度 (Rv) –7.02 km/s
自行 (μ) 赤经：60.26 ± 0.28 [3]mas/yr
赤纬：-62.81 ± 0.52 [3]mas/yr
视差 (π) 8.29 ± 0.58[3]mas
距离 390 ± 30 ly
(121 ± 8 pc)
绝对星等 (MV) 1.09
詳細資料

質量 1.13 ± 0.18 M☉
半徑 10.22 ± 0.87 R☉
表面重力 (log g) 2.84
亮度 41.2 L☉
溫度 4580 ± 70 K
金屬量 -0.15 ± 0.04
年齡 (5.83 ± 2.58) × 109年


其他命名

BD+69 302，GC 6245，GCRV 3027，HIP 24003，SAO 13382，HD 32518，HR 1636

參考資料庫

SIMBAD
data

HD 32518，又名BD+69 302，SAO 13382、HR 1636，是一颗鹿豹座的恒星[1][2]，视星等为6.41，位于銀經142.12，銀緯17.12，其B1900.0坐标为赤經4h 58m 40s，赤緯+69° 17.12′ 24″。該恆星是一顆視星等6等的 K 型巨星。它的質量是太陽的1.13倍，半徑是太陽的10.22倍，光度則是太陽的41.2倍。它的金屬量較太陽低，且較太陽年老。2009年8月在該恆星旁發現一顆氣體巨行星[4]。
























HD 32518的行星系[4]
成員
(依恆星距離)
質量
半長軸
(AU)
軌道週期
(天)
離心率
傾角
半徑

b
 ≥3.04 ± 0.69 MJ
 0.59 ± 0.03
 157.54 ± 0.38
 0.01 ± 0.03
 ?
 ?


參見


  • 小熊座11


参考文献





  1. ^ 1.01.11.21.31.41.51.61.71.8 Pulsating variable Star. SIMBAD. Centre de Données astronomiques de Strasbourg. [2012-07-13]. 


  2. ^ 2.02.12.22.32.42.52.62.72.8 VizieR Detailed Page. [2012-07-13]. 


  3. ^ 3.03.13.23.33.4 van Leeuwen, F. HIP 24003. Hipparcos, the New Reduction. 2007 [2010-02-26]. 


  4. ^ 4.04.1 Döllinger; 等. Planetary companions around the K giant stars 11 Ursae Minoris and HD 32518 (abstract). Astronomy and Astrophysics. 2009, 505 (3): 1311–1317. Bibcode:2009A&A...505.1311D. doi:10.1051/0004-6361/200911702.  引文格式1维护：显式使用等标签 (link)(web Preprint)



天球赤道座標：星图05h 09m 36.7193s，+69°38′21.844″







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