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房宿二(天蝎座ρ)是位于天蝎座双星系统,其视星等为3.87。

房宿二
Scorpius constellation map.svg
Red circle.svg



Location of ρ Scorpii (circled)
觀測資料
曆元 J2000
星座 天蝎座
星官
赤經 15h 56m 53.07624s[1]
赤緯 -29° 12′ 50.6612″ [1]
視星等(V) 3.86[2]
特性
光谱分类B2 IV[3]
U−B 色指数-0.82[2]
B−V 色指数-0.20[2]
天体测定
徑向速度 (Rv)−0.40[4] km/s
自行 (μ) 赤经:−15.68[1] mas/yr
赤纬:−24.88[1] mas/yr
视差 (π)6.91 ± 0.19[1] mas
距离470 ± 10 ly
(145 ± 4 pc)
绝对星等 (MV)−1.93[5]
軌道[6]
绕行周期 (P)4.0033 d
偏心率 (e)0.27
近心点 历元 (T)2442178.6060 JD
近心点幅角 (ω)
(secondary)
231°
半振幅 (K1)
(primary)
16.40 km/s
詳細資料
質量7.94±0.55[3] M
半徑5.0[7] R
亮度 (bolometric)3,432[3] L
溫度21,150[3] K
自轉速度 (v sin i)113[8] km/s
其他命名
Iklil, 5 Scorpii, ADS 9846, CCDM J15569-2913A, FK5 3258, GC 21398, HD 142669, HIP 78104, HR 5928, SAO 183957, CD−28° 11714[9]
參考資料庫
SIMBADdata

参考文献编辑

  1. ^ 1.0 1.1 1.2 1.3 1.4 van Leeuwen, F., Validation of the new Hipparcos reduction, Astronomy and Astrophysics, November 2007, 474 (2): 653–664, Bibcode:2007A&A...474..653V, arXiv:0708.1752, doi:10.1051/0004-6361:20078357. 
  2. ^ 2.0 2.1 2.2 Ducati, J. R., VizieR Online Data Catalog: Catalogue of Stellar Photometry in Johnson's 11-color system, CDS/ADC Collection of Electronic Catalogues, 2002, 2237, Bibcode:2002yCat.2237....0D. 
  3. ^ 3.0 3.1 3.2 3.3 Hohle, M. M.; 等, Masses and luminosities of O- and B-type stars and red supergiants, Astronomische Nachrichten, April 2010, 331 (4): 349, Bibcode:2010AN....331..349H, arXiv:1003.2335, doi:10.1002/asna.200911355. 
  4. ^ Evans, D. S., The Revision of the General Catalogue of Radial Velocities, (编) Batten, Alan Henry; Heard, John Frederick, Determination of Radial Velocities and their Applications, Proceedings from IAU Symposium no. 30, University of Toronto: International Astronomical Union, June 20–24, 1966, Bibcode:1967IAUS...30...57E. 
  5. ^ 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. 
  6. ^ Pourbaix, D.; 等, SB9: The ninth catalogue of spectroscopic binary orbits, Astronomy and Astrophysics, September 2004, 424: 727–732, Bibcode:2004A&A...424..727P, arXiv:astro-ph/0406573, doi:10.1051/0004-6361:20041213. 
  7. ^ Pasinetti Fracassini, L. E.; 等, Catalogue of Apparent Diameters and Absolute Radii of Stars (CADARS) - Third edition - Comments and statistics, Astronomy and Astrophysics, February 2001, 367 (2): 521–524, Bibcode:2001A&A...367..521P, arXiv:astro-ph/0012289, doi:10.1051/0004-6361:20000451. 
  8. ^ Simón-Díaz, S.; Herrero, A., The IACOB project: I. Rotational velocities in northern Galactic O- and early B-type stars revisited. The impact of other sources of line-broadening, Astronomy & Astrophysics, 2014, 562: A135, Bibcode:2014A&A...562A.135S, arXiv:1311.3360, doi:10.1051/0004-6361/201322758. 
  9. ^ rho Sco -- Spectroscopic binary, SIMBAD Astronomical Database (Centre de Données astronomiques de Strasbourg), [2016-09-22]. 

外部链接编辑

  • Kaler, James B., Rho Scorpii, Stars (University of Illinois), June 20, 2008 [2016-09-23].