寶瓶座71,即寶瓶座τ2(Tau2 Aquarii、τ2 Aqr、τ2 Aquarii),是一顆寶瓶座的恆星,視星等+4.0.[2]。該恆星是一顆橙色的巨星[7],光譜類型 K5 III[3]。它的角直徑在經過周邊昏暗修正後5.12 ± 0.05 mas[8]。它的距離經由視差量測大約是318光年或97秒差距[1],半徑是太陽的53倍[5]。
- 關於恆星系統中其他相同拜耳命名法恆星,請參見寶瓶座τ。
事实速览 觀測資料 曆元 J2000, 特性 ...
关闭
Gutierrez-Moreno, Adelina; et al, A System of photometric standards 1, Publicaciones Universidad de Chile, Department de Astronomy: 1–17, 1966, Bibcode:1966PDAUC...1....1G.
Houk, Nancy, Michigan catalogue of two-dimensional spectral types for the HD stars 4, Ann Arbor: Dept. of Astronomy, University of Michigan, 1978, Bibcode:1988mcts.book.....H.
Wielen, R.; et al, Sixth Catalogue of Fundamental Stars (FK6). Part I. Basic fundamental stars with direct solutions (35), Astronomisches Rechen-Institut Heidelberg, 1999, Bibcode:1999VeARI..35....1W.
Lang, Kenneth R., Astrophysical formulae, Astronomy and astrophysics library 1 3, Birkhäuser, 2006, ISBN 3-540-29692-1. The radius (R*) is given by:
The Colour of Stars, Australia Telescope, Outreach and Education (Commonwealth Scientific and Industrial Research Organisation), December 21, 2004 [2012-01-16], (原始内容存档于2012-03-10)