HD 39901

HD 39901 is an orange giant in the constellation of Columba. With an apparent magnitude of 6.561, it is only visible when there is almost no light pollution.

HD 39901
Observation data
Epoch J2000.0      Equinox J2000.0
Constellation Colomba
Right ascension  05h 53m 22.85122s[1]
Declination −42° 55′ 16.7849″[1]
Apparent magnitude (V) 6.55[2]
Characteristics
Spectral type K3III[3]
B−V color index 1.370±0.001[2]
Astrometry
Radial velocity (Rv)−9.54±0.15[1] km/s
Proper motion (μ) RA: +5.109[1] mas/yr
Dec.: +11.405[1] mas/yr
Parallax (π)5.0507 ± 0.0224[1] mas
Distance646 ± 3 ly
(198.0 ± 0.9 pc)
Absolute magnitude (MV)−0.03[2]
Details
Radius20.80+0.93
−1.99[1] R☉
Luminosity142.6±1.1[1] L☉
Temperature4,374+225
−95[1] K
Other designations
CD−42°2205, GC 7431, HD 39901, HIP 27835, HR 2069, SAO 217599[4]
Database references
SIMBADdata

References
  1. Brown, A. G. A.; et al. (Gaia collaboration) (August 2018). "Gaia Data Release 2: Summary of the contents and survey properties". Astronomy & Astrophysics. 616. A1. arXiv:1804.09365. Bibcode:2018A&A...616A...1G. doi:10.1051/0004-6361/201833051. Gaia DR2 record for this source at VizieR.
  2. Anderson, E.; Francis, Ch. (2012), "XHIP: An extended hipparcos compilation", Astronomy Letters, 38 (5): 331, arXiv:1108.4971, Bibcode:2012AstL...38..331A, doi:10.1134/S1063773712050015.
  3. Houk, N. (1978), Michigan catalogue of two-dimensional spectral types for the HD stars, 2, Dept. of Astronomy, University of Michigan, Bibcode:1978mcts.book.....H.
  4. "HD 39901". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2011-12-20.
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