33 Vulpeculae

From Wikipedia, the free encyclopedia
Jump to navigation Jump to search
33 Vulpeculae
Observation data
Epoch J2000      Equinox J2000
Constellation Vulpecula
Right ascension 20h 58m 16.35114s[1]
Declination +22° 19′ 33.2665″[1]
Apparent magnitude (V) 5.31[2]
Spectral type K3.5 III[2]
B−V color index 1.419±0.005[3]
Radial velocity (Rv)−25.23±0.24[3] km/s
Proper motion (μ) RA: −2.56[1] mas/yr
Dec.: −4.17[1] mas/yr
Parallax (π)7.21 ± 0.29[1] mas
Distance450 ± 20 ly
(139 ± 6 pc)
Absolute magnitude (MV)−0.41[3]
Luminosity295.15[3] L
Surface gravity (log g)1.91[4] cgs
Temperature4,070[4] K
Metallicity [Fe/H]−0.12[4] dex
Other designations
33 Vul, BD+21° 4424, FK5 1549, HD 199697, HIP 103511, HR 8032, SAO 89332[5]
Database references

33 Vulpeculae is a single,[6] fifth-magnitude[2] star in northern the constellation of Vulpecula. This is an evolved giant star with a stellar classification of K3.5 III.[2] It is located around 450 light years away.[1]


  1. ^ a b c d e f 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.
  2. ^ a b c d Keenan, Philip C.; McNeil, Raymond C. (1989), "The Perkins catalog of revised MK types for the cooler stars", Astrophysical Journal Supplement Series, 71: 245, Bibcode:1989ApJS...71..245K, doi:10.1086/191373.
  3. ^ a b c d 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.
  4. ^ a b c Soubiran, C.; et al. (June 2010), "The PASTEL catalogue of stellar parameters", Astronomy and Astrophysics, 515: A111, arXiv:1004.1069, Bibcode:2010A&A...515A.111S, doi:10.1051/0004-6361/201014247.
  5. ^ "33 Vul". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2018-04-21.
  6. ^ 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.

External links[edit]