圆规座γ

圆规座γ （γ Cir）是位于圆规座的恒星系统，视星等4.51^[2]，距地球450光年。赫歇尔于1835年发现这是一对联星，并估算两颗子星的角距离为1弧秒^[10]。

γ Circini

圆规座γ在天球上的位置（红圈内）
观测资料 历元 J2000.0
星座	圆规座
星官
赤经	15h 23m 22.64294s[1]
赤纬	−59° 19′ 14.8131″[1]
视星等（V）	4.51[2] (4.94 + 5.73)[3]
特性
光谱分类	B5 IV[4] + F8 V[2]
变星类型	Be[5]
天体测定
径向速度 (Rv)	7001169000000000000♠16.90±1.78[6] km/s
自行 (μ)	赤经：−12.97[1] mas/yr 赤纬：−34.24[1] mas/yr
视差 (π)	7.27 ± 0.81[1] mas
距离	approx. 450 ly (approx. 140 pc)
绝对星等 (MV)	−2.3/−2.6
轨道[4]
绕行周期 (P)	258 yr
半长轴 (a)	2.576"
偏心率 (e)	0.931
详细资料
γ Cir A
质量	7000600000000000000♠6.0±0.3[7] M☉
温度	15,135[8] K
年龄	7001631000000000000♠63.1±19.6[7] Myr
γ Cir B
温度	4,786[8] K
其他命名
γ Cir, HIP 75323, HR 5704, SAO 242463.[9]

参考资料

1. 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. Buscombe, W.; Barkstrom, B., The composite spectrum of gamma Circini, Monthly Notices of the Royal Astronomical Society, 1971, 152: 37−45, Bibcode:1971MNRAS.152...37B, doi:10.1093/mnras/152.1.37.
3. Mason, B. D.; et al, The Washington Visual Double Star Catalog, 2014 [2015-07-22], Bibcode:2001AJ....122.3466M, doi:10.1086/323920, （原始内容存档于2019-07-04）
4. Malkov, O. Yu.; et al, Dynamical masses of a selected sample of orbital binaries, Astronomy & Astrophysics, 2012, 546: A69, Bibcode:2012A&A...546A..69M, doi:10.1051/0004-6361/201219774.
5. Kazarovets, E. V.; et al. The 74th Special Name-list of Variable Stars. Information Bulletin on Variable Stars. 1999, 4659: 1. Bibcode:1999IBVS.4659....1K.
6. 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.
7. Tetzlaff, N.; et al, A catalogue of young runaway Hipparcos stars within 3 kpc from the Sun, Monthly Notices of the Royal Astronomical Society, January 2011, 410 (1): 190–200, Bibcode:2011MNRAS.410..190T, arXiv:1007.4883 , doi:10.1111/j.1365-2966.2010.17434.x.
8. Parsons, Sidney B., New and Confirmed Triple Systems with Luminous Cool Primaries and Hot Companions, The Astronomical Journal, May 2004, 127 (5): 2915−2930, Bibcode:2004AJ....127.2915P, doi:10.1086/383546.
9. gam Cir -- Double or multiple star, SIMBAD Astronomical Database (Centre de Données astronomiques de Strasbourg), [2017-01-13], （原始内容存档于2017-01-19）.
10. Carette, E.; et al, γ Circinus: a young visual binary with pre-main-sequence component(s)?, Astronomy and Astrophysics, April 1995, 296: 139, Bibcode:1995A&A...296..139C.

外部链接

• http://server3.wikisky.org/starview?object_type=1&object_id=1111 （页面存档备份，存于互联网档案馆）