Mu Capricorni

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μ Capricorni
Observation data
Epoch J2000.0      Equinox J2000.0
Constellation Capricornus
Right ascension 21h53m17.8s
Declination −13°33′06″
Apparent magnitude (V) +5.08
Absolute magnitude (V) +2.97[1]
Distance 90.2 ± 2. ly
(27.7 ± 0.6 pc)
Spectral type F1III
Other designations
51 Capricorni, HR 8351, HD 207958, Gl 838.5, BD−14°6149, FK5 1577, HIP 108036, SAO 164713, GC 30631

Mu Capricorni (μ Cap, μ Capricorni) is a star in the constellation Capricornus. μ Capricorni is a yellow-white F-type giant with an apparent magnitude of +5.08 and is approximately 90.2 light years from Earth.

It has a projected rotational velocity of 69.3±3.5 km/s and an effective temperature of 6,747 K.[1]

In Chinese, (), meaning Crying, refers to an asterism consisting of μ Capricorni and 38 Aquarii.[2] Consequently, μ Capricorni itself is known as 哭一 (Kū yī, English: the First Star of Crying.).[3] From this Chinese name, the name Kuh was appeared.[4]


  1. ^ a b Reiners, A. (January 2006), "Rotation- and temperature-dependence of stellar latitudinal differential rotation", Astronomy and Astrophysics, 446 (1): 267–277, arXiv:astro-ph/0509399Freely accessible, Bibcode:2006A&A...446..267R, doi:10.1051/0004-6361:20053911. 
  2. ^ (Chinese) 中國星座神話, written by 陳久金. Published by 台灣書房出版有限公司, 2005, ISBN 978-986-7332-25-7.
  3. ^ (Chinese) AEEA (Activities of Exhibition and Education in Astronomy) 天文教育資訊網 2006 年 7 月 5 日
  4. ^ Richard Hinckley Allen: Star Names — Their Lore and Meaning:Capricornus