天市右垣四

天市右垣四（巨蛇座γ）也称郑，是位于巨蛇座的恒星，其视星等为3.85^[2]。

天市右垣四

觀測資料 曆元 J2000
星座	巨蛇座
星官
赤經	15h 56m 27.18269s[1]
赤緯	+15° 39′ 41.8206″[1]
視星等（V）	3.85[2]
特性
光谱分类	F6 V[2]
U−B 色指数	-0.03[3]
B−V 色指数	+0.48[2]
天体测定
徑向速度 (Rv)	6.78 ± 0.09[4] km/s
自行 (μ)	赤经：310.93 ± 0.20[1] mas/yr 赤纬：-1282.19 ± 0.18[1] mas/yr
视差 (π)	89.565 ± 0.18[1] mas
距离	36.42 ± 0.07 ly (11.17 ± 0.02 pc)
绝对星等 (MV)	3.60[5]
詳細資料
質量	1.30 ± 0.15[6] M☉
半徑	1.55 ± 0.05[6] R☉
表面重力 (log g)	4.23[2]
亮度	3.02 ± 0.09[6] L☉
溫度	6,350 ± 310[2] K
金属量 [Fe/H]	−0.19[6] dex
自轉速度 (v sin i)	10.2[6] km/s
年齡	3.49[7] Gyr
其他命名
Ainalhai, 41 Serpentis, BD+16° 2849, FK5 591, GCTP 3604.00, HD 142860, HIP 78072, HR 5933, LHS 408, SAO 101826.[8]
參考資料庫
SIMBAD	资料

参考文献

1. van Leeuwen, F. Validation of the new Hipparcos reduction. Astronomy and Astrophysics. 2007, 474 (2): 653–664 [2018-02-26]. Bibcode:2007A&A...474..653V. arXiv:0708.1752 . 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. Malagnini, M. L.; Morossi, C., Accurate absolute luminosities, effective temperatures, radii, masses and surface gravities for a selected sample of field stars, Astronomy and Astrophysics Supplement Series, November 1990, 85 (3): 1015–1019, Bibcode:1990A&AS...85.1015M
3. Mermilliod, J.-C., Compilation of Eggen's UBV data, transformed to UBV (unpublished), Catalogue of Eggen's UBV data. SIMBAD, 1986, Bibcode:1986EgUBV........0M.
4. Nidever, David L.; et al, Radial Velocities for 889 Late-Type Stars, The Astrophysical Journal Supplement Series, August 2002, 141 (2): 503–522, Bibcode:2002ApJS..141..503N, arXiv:astro-ph/0112477 , doi:10.1086/340570.
5. Holmberg, J.; et al, The Geneva-Copenhagen survey of the solar neighbourhood. III. Improved distances, ages, and kinematics, Astronomy and Astrophysics, July 2009, 501 (3): 941–947, Bibcode:2009A&A...501..941H, arXiv:0811.3982 , doi:10.1051/0004-6361/200811191.
6. Bruntt, H.; et al, Accurate fundamental parameters for 23 bright solar-type stars, Monthly Notices of the Royal Astronomical Society, July 2010, 405 (3): 1907–1923, Bibcode:2010MNRAS.405.1907B, arXiv:1002.4268 , doi:10.1111/j.1365-2966.2010.16575.x
7. Vican, Laura, Age Determination for 346 Nearby Stars in the Herschel DEBRIS Survey, The Astronomical Journal, June 2012, 143 (6): 135, Bibcode:2012AJ....143..135V, arXiv:1203.1966 , doi:10.1088/0004-6256/143/6/135.
8. * gam Ser. SIMBAD. 斯特拉斯堡天文資料中心. [2007-01-23].

外部链接

• Gamma Serpentis by Professor Jim Kaler.