Mu Coronae Borealis

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Mu Coronae Borealis
Observation data
Epoch J2000.0      Equinox J2000.0 (ICRS)
Constellation Corona Borealis
Right ascension 15h 35m 14.91848s [1]
Declination +39° 00′ 36.2473″ [1]
Spectral type M1.5III[1]
Other designations
HR 5800, HD 139153, HIP 76307

Mu Coronae Borealis (m CrB), is a star located in the constellation Corona Borealis. Mu Coronae Borealis is also known as HR 5800, and HD 139153. The star is located at Right Ascension 15h 35m 15s and Declination 39 deg 00 arcmin 36 arcsec.

Mu Coronae Borealis is a red giant of spectral type M1.5III with an apparent visual magnitude of +5.11, and an absolute visual magnitude of -1.08. Mu Coronae Borealis has an effective temperature of 3200K and a mass of 1.2 solar masses.

Located around 619 light-years distant, it shines with a luminosity approximately 932 times that of the Sun and has a surface temperature of 3889 K.[2]


  1. ^ a b c "Mu Coronae Borealis". SIMBAD Astronomical Database. Centre de Données astronomiques de Strasbourg. Retrieved 13 November 2014. 
  2. ^ McDonald, I.; Zijlstra, A. A.; Boyer, M. L. (2012). "Fundamental Parameters and Infrared Excesses of Hipparcos Stars". Monthly Notices of the Royal Astronomical Society 427 (1): 343–57. arXiv:1208.2037. Bibcode:2012MNRAS.427..343M. doi:10.1111/j.1365-2966.2012.21873.x.