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] |
| Characteristics | |
| Spectral type | M1 III[3] |
| B−V color index | +1.65[2] |
| Astrometry | |
| 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 mas[1] |
| Distance | 580 ± 30 ly (178 ± 9 pc) |
| Absolute magnitude (MV) | −1.09[5] |
| Details | |
| Luminosity | 944[6] L☉ |
| Temperature | 3,779[6] K |
| Metallicity [Fe/H] | −0.08[5] dex |
| Other designations | |
| Database references | |
| SIMBAD | data |
Upsilon Capricorni, Latinized from υ Capricorni, is a solitary[8] star 0.22 degrees north of the ecliptic,[citation needed] in the southern constellation Capricornus. It is a M-type red giant with an apparent magnitude of +5.17, about 760 light years from Earth.
References
- ^ a b c d e van Leeuwen, F. (2007), "Validation of the new Hipparcos reduction", Astronomy and Astrophysics, 474 (2): 653–664, arXiv:0708.1752, Bibcode:2007A&A...474..653V, doi:10.1051/0004-6361:20078357.
- ^ 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.
- ^ Houk, N.; Smith-Moore, M. (1988), Michigan Catalogue of Two-dimensional Spectral Types for the HD Stars, vol. 4, Bibcode:1988mcts.book.....H.
- ^ 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:1606.08053, Bibcode:2006AstL...32..759G, doi:10.1134/S1063773706110065.
- ^ a b 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.
- ^ 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:1208.2037, Bibcode:2012MNRAS.427..343M, doi:10.1111/j.1365-2966.2012.21873.x.
- ^ "* ups Cap". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2017-05-12.
{{cite web}}: CS1 maint: postscript (link) - ^ 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:0806.2878, Bibcode:2008MNRAS.389..869E, doi:10.1111/j.1365-2966.2008.13596.x.
