Astronomy:33 Vulpeculae
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Short description: Star in the constellation Vulpecula
| Observation data Equinox J2000.0]] (ICRS) | |
|---|---|
| Constellation | Vulpecula |
| Right ascension | 20h 58m 16.34942s[1] |
| Declination | +22° 19′ 33.2638″[1] |
| Apparent magnitude (V) | 5.31[2] |
| Characteristics | |
| Spectral type | K3.5 III[2] |
| B−V color index | 1.419±0.005[3] |
| Astrometry | |
| Radial velocity (Rv) | −25.23±0.24[3] km/s |
| Proper motion (μ) | RA: −2.327[1] mas/yr Dec.: −4.511[1] mas/yr |
| Parallax (π) | 6.5257 ± 0.1689[1] mas |
| Distance | 500 ± 10 ly (153 ± 4 pc) |
| Absolute magnitude (MV) | −0.41[3] |
| Details | |
| Radius | 35.34+1.13 −2.22[1] R☉ |
| Luminosity | 333.7±9.9[1] L☉ |
| Surface gravity (log g) | 1.91[4] cgs |
| Temperature | 4,070[4] K |
| Metallicity [Fe/H] | −0.12[4] dex |
| Other designations | |
| Database references | |
| SIMBAD | data |
33 Vulpeculae is a single[6] star located around 500 light-years away from the Sun in the northern constellation of Vulpecula. It is visible to the naked eye as a dim, orange-hued star with an apparent visual magnitude of 5.31.[2] The object is drifting closer to the Earth with a heliocentric radial velocity of −25 km/s.[3]
This is an evolved giant star with a stellar classification of K3.5 III,[2] having exhausted the supply of hydrogen at it its core and expanded to 35[1] times the Sun's radius. It serves as a spectral standard for stars of its particular class.[7] This star is radiating 334[1] times the luminosity of the Sun from its enlarged photosphere at an effective temperature of 4,070 K.[4]
References
- ↑ 1.0 1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 Brown, A. G. A. (August 2018). "Gaia Data Release 2: Summary of the contents and survey properties". Astronomy & Astrophysics 616: A1. doi:10.1051/0004-6361/201833051. Bibcode: 2018A&A...616A...1G. Gaia DR2 record for this source at VizieR.
- ↑ 2.0 2.1 2.2 2.3 Keenan, Philip C.; McNeil, Raymond C. (1989), "The Perkins catalog of revised MK types for the cooler stars", Astrophysical Journal Supplement Series 71: 245, doi:10.1086/191373, Bibcode: 1989ApJS...71..245K.
- ↑ 3.0 3.1 3.2 3.3 Anderson, E.; Francis, Ch. (2012), "XHIP: An extended hipparcos compilation", Astronomy Letters 38 (5): 331, doi:10.1134/S1063773712050015, Bibcode: 2012AstL...38..331A.
- ↑ 4.0 4.1 4.2 4.3 Soubiran, C. et al. (June 2010), "The PASTEL catalogue of stellar parameters", Astronomy and Astrophysics 515: A111, doi:10.1051/0004-6361/201014247, Bibcode: 2010A&A...515A.111S.
- ↑ "33 Vul". SIMBAD. Centre de données astronomiques de Strasbourg. http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=33+Vul.
- ↑ 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, doi:10.1111/j.1365-2966.2008.13596.x, Bibcode: 2008MNRAS.389..869E.
- ↑ Keenan, P. C.; Yorka, S. B. (1988), "1988 Revised MK Spectral Standards for Stars GO and Later", Bulletin d'Information du Centre de Données Stellaires 35: 37, Bibcode: 1988BICDS..35...37K.
External links
- 33 Vulpeculae on WikiSky: DSS2, SDSS, GALEX, IRAS, Hydrogen α, X-Ray, Astrophoto, Sky Map, Articles and images
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