Nu1 Coronae Borealis

Nu1 Coronae Borealis
Observation data
Epoch J2000.0      Equinox J2000.0 (ICRS)
Constellation Corona Borealis
Right ascension 16h 22m 21.42498s [1]
Declination +33° 47 56.5893 [1]
Apparent magnitude (V) 5.20[1]
Characteristics
Spectral type M2III
Astrometry
Parallax (π)5.09 ± 0.22[2] mas
Distance640 ± 30 ly
(196 ± 8 pc)
Other designations
20 Coronae Borealis, HR 6107, HD 147749, HIP 80197 [1]

Nu1 Coronae Borealis, is a star located in the constellation Corona Borealis. It is a red giant of spectral type M2III with an apparent visual magnitude of +5.20.[1]

Located around 640 light-years distant, it shines with a luminosity approximately 1155 times that of the Sun and has a surface temperature of 3760 K.[3]

References

  1. 1 2 3 4 5 "Nu1 Coronae Borealis". SIMBAD Astronomical Database. Centre de Données astronomiques de Strasbourg. Retrieved 13 November 2014.
  2. van Leeuwen, F. (2007). "Validation of the New Hipparcos Reduction". Astronomy and Astrophysics 474 (2): 653–64. arXiv:0708.1752. Bibcode:2007A&A...474..653V. doi:10.1051/0004-6361:20078357.
  3. 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.
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