Upsilon Capricorni

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Upsilon Capricorni
Observation data
Epoch J2000.0      Equinox J2000.0 (ICRS)
Constellation Capricornus
Right ascension 20h 40m 02.94470s[1]
Declination −18° 08′ 19.1724″[1]
Apparent magnitude (V) 5.17[2]
Spectral type M1 III[3]
B−V color index +1.65[2]
Radial velocity (Rv)−12.30±1.6[4] km/s
Proper motion (μ) RA: −22.41[1] mas/yr
Dec.: −21.67[1] mas/yr
Parallax (π)5.62 ± 0.29[1] mas
Distance580 ± 30 ly
(178 ± 9 pc)
Absolute magnitude (MV)−1.09[5]
Luminosity944[6] L
Temperature3,779[6] K
Metallicity [Fe/H]−0.08[5] dex
Other designations
υ Cap, 15 Cap, BD−18° 5738, FK5 773, HD 196777, HIP 101984, HR 7900, SAO 163779[7]
Database references

Upsilon Capricorni, Latinized from υ Capricorni, is a solitary[8] star in the southern constellation Capricornus. υ Capricorni is a M-type red giant with an apparent magnitude of +5.15. It is approximately 760 light years from Earth.


  1. ^ a b c d e van Leeuwen, F. (2007), "Validation of the new Hipparcos reduction", Astronomy and Astrophysics, 474 (2): 653–664, arXiv:0708.1752Freely accessible, Bibcode:2007A&A...474..653V, doi:10.1051/0004-6361:20078357. 
  2. ^ a b Barnes, T. G.; et al. (May 1978), "Stellar angular diameters and visual surface brightness. III - an improved definition of the relationship", Monthly Notices of the Royal Astronomical Society, 183: 285–304, Bibcode:1978MNRAS.183..285B, doi:10.1093/mnras/183.3.285. 
  3. ^ Houk, N.; Smith-Moore, M. (1988), Michigan Catalogue of Two-dimensional Spectral Types for the HD Stars, 4, 
  4. ^ Gontcharov, G. A. (November 2006), "Pulkovo Compilation of Radial Velocities for 35495 Hipparcos stars in a common system", Astronomy Letters, 32 (11): 759–771, arXiv:1606.08053Freely accessible, Bibcode:2006AstL...32..759G, doi:10.1134/S1063773706110065. 
  5. ^ a b Anderson, E.; Francis, Ch. (2012), "XHIP: An extended hipparcos compilation", Astronomy Letters, 38 (5): 331, arXiv:1108.4971Freely accessible, Bibcode:2012AstL...38..331A, doi:10.1134/S1063773712050015. 
  6. ^ a b McDonald, I.; et al. (2012), "Fundamental parameters and infrared excesses of Hipparcos stars", Monthly Notices of the Royal Astronomical Society, 427: 343, arXiv:1208.2037Freely accessible, Bibcode:2012MNRAS.427..343M, doi:10.1111/j.1365-2966.2012.21873.x. 
  7. ^ "* ups Cap". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2017-05-12. 
  8. ^ Eggleton, P. P.; Tokovinin, A. A. (September 2008), "A catalogue of multiplicity among bright stellar systems", Monthly Notices of the Royal Astronomical Society, 389 (2): 869–879, arXiv:0806.2878Freely accessible, Bibcode:2008MNRAS.389..869E, doi:10.1111/j.1365-2966.2008.13596.x.