Beta Camelopardalis

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β Camelopardalis
Camelopardalis constellation map.svg
Red circle.svg

Location of β Cam (circled)
Observation data
Epoch J2000      Equinox J2000
Constellation Camelopardalis
Right ascension 05h 03m 25.08963s[1]
Declination +60° 26′ 32.0895″[1]
Apparent magnitude (V) 4.02[2]
Spectral type G1Ib–IIa[3]
U−B color index +0.62[2]
B−V color index +0.93[2]
R−I color index +0.49[2]
Radial velocity (Rv) −190[4] km/s
Proper motion (μ) RA: −6.50[1] mas/yr
Dec.: −14.15[1] mas/yr
Parallax (π) 3.74 ± 0.21[1] mas
Distance 870 ± 50 ly
(270 ± 20 pc)
Absolute magnitude (MV) −3.1[5]
Mass 6.5[3] M
Luminosity 1,592[6] L
Surface gravity (log g) 1.79[3] cgs
Temperature 5,300[3] K
Metallicity [Fe/H] −0.06[7] dex
Rotational velocity (v sin i) 11.7[8] km/s
Age 63[3] Myr
Other designations
10 Camelopardalis, HR 1603, HD 31910, BD+60° 856, FK5 182, HIP 23522, SAO 13351, WDS J05034+6027
Database references
Data sources:
Hipparcos Catalogue,
CCDM (2002),
Bright Star Catalogue (5th rev. ed.)

Beta Camelopardalis (β Cam / β Camelopardalis) is the brightest star in the constellation Camelopardalis. It is a yellow G-type supergiant with an apparent magnitude of +4.03, approximately 870 light years from Earth.

β Cam has two close companions: a 7th magnitude A5 star at 84"; and a 12th magnitude star at 15".[9]


  1. ^ a b c d e Van Leeuwen, F. (2007). "Validation of the new Hipparcos reduction". Astronomy and Astrophysics. 474 (2): 653. Bibcode:2007A&A...474..653V. arXiv:0708.1752Freely accessible. doi:10.1051/0004-6361:20078357. 
  2. ^ a b c d Ducati, J. R. (2002). "VizieR Online Data Catalog: Catalogue of Stellar Photometry in Johnson's 11-color system". CDS/ADC Collection of Electronic Catalogues. 2237. Bibcode:2002yCat.2237....0D. 
  3. ^ a b c d e Lyubimkov, Leonid S.; Lambert, David L.; Korotin, Sergey A.; Rachkovskaya, Tamara M.; Poklad, Dmitry B. (2015). "Carbon abundance and the N/C ratio in atmospheres of A-, F- and G-type supergiants and bright giants". Monthly Notices of the Royal Astronomical Society. 446 (4): 3447. Bibcode:2015MNRAS.446.3447L. arXiv:1411.2722Freely accessible. doi:10.1093/mnras/stu2299. 
  4. ^ Gontcharov, G. A. (2006). "Pulkovo Compilation of Radial Velocities for 35 495 Hipparcos stars in a common system". Astronomy Letters. 32 (11): 759. Bibcode:2006AstL...32..759G. doi:10.1134/S1063773706110065. 
  5. ^ Gray, David F.; Pugh, Teznie (2012). "The Third Signature of Granulation in Bright-giant and Supergiant Stars". The Astronomical Journal. 143 (4): 92. Bibcode:2012AJ....143...92G. doi:10.1088/0004-6256/143/4/92. 
  6. ^ McDonald, I.; Zijlstra, A. A.; Boyer, M. L. (2012). "Fundamental parameters and infrared excesses of Hipparcos stars". Monthly Notices of the Royal Astronomical Society. 427: 343. Bibcode:2012MNRAS.427..343M. arXiv:1208.2037Freely accessible. doi:10.1111/j.1365-2966.2012.21873.x. 
  7. ^ Kovtyukh, V. V.; Gorlova, N. I.; Belik, S. I. (2012). "Accurate luminosities from the oxygen λ7771-4 Å triplet and the fundamental parameters of F-G supergiants". Monthly Notices of the Royal Astronomical Society. 423 (4): 3268. Bibcode:2012MNRAS.423.3268K. arXiv:1204.4115Freely accessible. doi:10.1111/j.1365-2966.2012.21117.x. 
  8. ^ Rodrigues Da Silva, R.; Canto Martins, B. L.; De Medeiros, J. R. (2015). "On the Nature of Rapidly Rotating Single Evolved Stars". The Astrophysical Journal. 801: 54. Bibcode:2015ApJ...801...54R. arXiv:1503.03447Freely accessible. doi:10.1088/0004-637X/801/1/54. 
  9. ^ Mason, Brian D.; Wycoff, Gary L.; Hartkopf, William I.; Douglass, Geoffrey G.; Worley, Charles E. (2001). "The 2001 US Naval Observatory Double Star CD-ROM. I. The Washington Double Star Catalog". The Astronomical Journal. 122 (6): 3466. Bibcode:2001AJ....122.3466M. doi:10.1086/323920. 

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