從官二

從官二豺狼座χχ Lup)是在豺狼座的一顆光譜聯星[1],他得視星等大約是3.957[1]。聯星中的主星是一顆光譜類型為B9.5V的汞-錳星,伴星是光譜類型為A2Vm的金屬線星[2]

豺狼座χ
觀測資料
曆元 J2000.0
星座 豺狼座
星官 从官 (房宿
赤經 15h 50m 57.5376s[1]
赤緯 −33° 37 37.796[1]
視星等(V) 3.957[1]
特性
光谱分类B9.5V / A2Vm[2]
U−B 色指数−0.13[3]
B−V 色指数−0.04[3]
R−I 色指数−0.07[3]
天体测定
徑向速度 (Rv)5 ± 20[1] km/s
自行 (μ) 赤经:−5.92[1] mas/yr
赤纬:−24.91[1] mas/yr
视差 (π)15.86 ± 0.84[1] mas
距离210 ± 10 ly
(63 ± 3 pc)
詳細資料
半徑3.70[4] R
自轉速度 (v sin i)0[3] km/s
其他命名
χ Lup, Chi Lupi, Chi Lup, 5 Lupi, 5 Lup, CD−33 10754, CPD−33 3933, FK5 586, GC 21281, HD 141556, HIP 77634, HR 5883, PPM 294334, SAO 207040.[1]
參考資料庫
SIMBAD资料

參考資料

  1. HD 141556 -- Spectroscopic binary, database entry, SIMBAD. Accessed on line August 14, 2008.
  2. On the Ga II and Ga III Resonance Lines and the Implication for Chemical Stratification in HgMn Stars, K. E. Nielsen et al., Astronomical Journal 130, #5 (November 2005), pp. 2312–2317, Bibcode2005AJ....130.2312N, doi:10.1086/491703.
  3. HR 5883, database entry, The Bright Star Catalogue, 5th Revised Ed. (Preliminary Version), D. Hoffleit and W. H. Warren, Jr., CDS ID V/50. Accessed on line August 14, 2008.
  4. HD 141556, database entry, Catalog of Apparent Diameters and Absolute Radii of Stars (CADARS), 3rd edition, L. E. Pasinetti-Fracassini, L. Pastori, S. Covino, and A. Pozzi, CDS ID II/224. Accessed on line August 14, 2008.
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