天园十二
外观
(重定向自波江座υ2)
觀測資料 曆元 J2000.0 | |
---|---|
星座 | 波江座 |
星官 | |
赤經 | 04h 35m 33.03834s[1] |
赤緯 | −30° 33′ 44.4297″[1] |
視星等(V) | 3.804[2] |
特性 | |
光谱分类 | G8+ III[3] |
U−B 色指数 | +0.740[2] |
B−V 色指数 | +0.968[2] |
天体测定 | |
徑向速度 (Rv) | ±0.9 −4.0[4] km/s |
自行 (μ) | 赤经:−49.27[1] mas/yr 赤纬:−12.72[1] mas/yr |
视差 (π) | 15.25 ± 0.19[1] mas |
距离 | 214 ± 3 ly (65.6 ± 0.8 pc) |
绝对星等 (MV) | −0.27[5] |
詳細資料 | |
半徑 | 16[6] R☉ |
表面重力 (log g) | ±0.07 2.77[7] |
亮度 | 138[8] L☉ |
溫度 | ±30 5,074[7] K |
金属量 [Fe/H] | ±0.03 0.04[7] dex |
其他命名 | |
參考資料庫 | |
SIMBAD | 资料 |
天园十二(波江座υ2)是位于波江座的恒星,其视星等为3.804。
参考文献
[编辑]- ^ 1.0 1.1 1.2 1.3 1.4 van Leeuwen, F., Validation of the new Hipparcos reduction, Astronomy and Astrophysics, 2007, 474 (2): 653–664, Bibcode:2007A&A...474..653V, arXiv:0708.1752
, doi:10.1051/0004-6361:20078357.
- ^ 2.0 2.1 2.2 Gutierrez-Moreno, Adelina; et al, A System of photometric standards 1, Publicaciones Universidad de Chile, Department de Astronomy: 1–17, 1966, Bibcode:1966PDAUC...1....1G.
- ^ Keenan, P.; McNeil, R., The Perkins catalog of revised MK types for the cooler stars, Astrophysical Journal Supplement Series, October 1989, 71: 245–266, Bibcode:1989ApJS...71..245K, doi:10.1086/191373.
- ^ de Bruijne, J. H. J.; Eilers, A.-C., Radial velocities for the HIPPARCOS-Gaia Hundred-Thousand-Proper-Motion project, Astronomy & Astrophysics, October 2012, 546: 14, Bibcode:2012A&A...546A..61D, arXiv:1208.3048
, doi:10.1051/0004-6361/201219219, A61.
- ^ Anderson, E.; Francis, Ch., XHIP: An extended hipparcos compilation, Astronomy Letters, 2012, 38 (5): 331, Bibcode:2012AstL...38..331A, arXiv:1108.4971
, doi:10.1134/S1063773712050015.
- ^ Lang, Kenneth R., Astrophysical formulae, Astronomy and astrophysics library 1 3rd, Birkhäuser, 2006 [2018-02-25], ISBN 3-540-29692-1, (原始内容存档于2019-05-20). The radius (R*) is given by:
- ^ 7.0 7.1 7.2 Alves, S.; et al, Determination of the spectroscopic stellar parameters for 257 field giant stars, Monthly Notices of the Royal Astronomical Society, April 2015, 448 (3): 2749–2765, Bibcode:2015MNRAS.448.2749A, arXiv:1503.02556
, doi:10.1093/mnras/stv189.
- ^ McDonald, I.; et al, Fundamental Parameters and Infrared Excesses of Hipparcos Stars, Monthly Notices of the Royal Astronomical Society, 2012, 427 (1): 343–57, Bibcode:2012MNRAS.427..343M, arXiv:1208.2037
, doi:10.1111/j.1365-2966.2012.21873.x.
- ^ ups02 Eri -- Star, SIMBAD Astronomical Database (Centre de Données astronomiques de Strasbourg), [2016-10-13], (原始内容存档于2020-11-05).