圆规座γ

圆规座γγ Cir)是位於圓規座的恒星系统,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)
觀測資料
曆元 J2000.0
星座 圆规座
星官
赤經 15h 23m 22.64294s[1]
赤緯 −59° 19 14.8131[1]
視星等(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
徑向速度 (Rv)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
軌道[4]
繞行週期 (P)258 yr
半長軸 (a)2.576"
偏心率 (e)0.931
詳細資料
γ Cir A
質量6.0±0.3[7] M
溫度15,135[8] K
年齡63.1±19.6[7] Myr
γ Cir B
溫度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., , Astronomy and Astrophysics, 2007, 474 (2): 653–664, Bibcode:2007A&A...474..653V, arXiv:0708.1752可免费查阅, doi:10.1051/0004-6361:20078357.
  2. Buscombe, W.; Barkstrom, B., , 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, , 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, , Astronomy & Astrophysics, 2012, 546: A69, Bibcode:2012A&A...546A..69M, doi:10.1051/0004-6361/201219774.
  5. Kazarovets, E. V.; et al. . Information Bulletin on Variable Stars. 1999, 4659: 1. Bibcode:1999IBVS.4659....1K.
  6. de Bruijne, J. H. J.; Eilers, A.-C., , Astronomy & Astrophysics, October 2012, 546: 14, Bibcode:2012A&A...546A..61D, arXiv:1208.3048可免费查阅, doi:10.1051/0004-6361/201219219, A61.
  7. Tetzlaff, N.; et al, , Monthly Notices of the Royal Astronomical Society, January 2011, 410 (1): 190–200, Bibcode:2011MNRAS.410..190T, arXiv:1007.4883可免费查阅, doi:10.1111/j.1365-2966.2010.17434.x.
  8. Parsons, Sidney B., , The Astronomical Journal, May 2004, 127 (5): 2915−2930, Bibcode:2004AJ....127.2915P, doi:10.1086/383546.
  9. , 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, , Astronomy and Astrophysics, April 1995, 296: 139, Bibcode:1995A&A...296..139C.

外部链接

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