36 Camelopardalis

36 Camelopardalis is a single star[11] in the northern circumpolar constellation of Camelopardalis. It is visible to the naked eye as a dim point of light with an apparent visual magnitude of +5.3. Parallax measurements provide a distance estimate of approximately 710 light years away from the Sun, and it is drifting away from the Earth with a radial velocity of −1.15 km/s.

36 Camelopardalis
Observation data
Epoch J2000.0      Equinox J2000.0 (ICRS)
Constellation Camelopardalis
Right ascension 06h 12m 51.06255s[1]
Declination +65° 43′ 06.3160″[1]
Apparent magnitude (V) 5.344[2]
Characteristics
Spectral type K1 III-IIIb CH-0.5[3]
U−B color index +2.708[4]
B−V color index +0.764[4]
Astrometry
Radial velocity (Rv)+1.15±0.13[5] km/s
Proper motion (μ) RA: +6.240[1] mas/yr
Dec.: −31.308[1] mas/yr
Parallax (π)4.5905 ± 0.0728 mas[1]
Distance710 ± 10 ly
(218 ± 3 pc)
Absolute magnitude (MV)−1.33[6]
Details
Mass1.24[7] M☉
Radius42[8] R☉
Luminosity714[8] L☉
Surface gravity (log g)1.26[7] cgs
Temperature4,589[8] K
Metallicity [Fe/H]−0.11[7] dex
Rotational velocity (v sin i)3.0[9] km/s
Other designations
36 Cam, BD+65°517, FK5 233, GC 7856, HD 41927, HIP 2940, HR 2165, SAO 13756[10]
Database references
SIMBADdata

36 Camelopardalis has a stellar classification of K1 III-IIIb, which indicates that it is a K-type giant star with a mild underabundance of CH molecules in its spectrum. At present it has 1.24 times the mass of the Sun but has expanded to an enlarged diameter of 42 R☉. It shines at 714 L☉ from its photosphere at an effective temperature of 4,589 K, giving it an orange glow. 36 Cam's metallicity is around solar level and spins slowly with a projected rotational velocity of 3 km/s.

References
  1. Brown, A. G. A.; et al. (Gaia collaboration) (2021). "Gaia Early Data Release 3: Summary of the contents and survey properties". Astronomy & Astrophysics. 649: A1. arXiv:2012.01533. Bibcode:2021A&A...649A...1G. doi:10.1051/0004-6361/202039657. S2CID 227254300. (Erratum: doi:10.1051/0004-6361/202039657e). Gaia EDR3 record for this source at VizieR.
  2. Høg, E.; et al. (2000). "The Tycho-2 catalogue of the 2.5 million brightest stars". Astronomy and Astrophysics. 355: L27–L30. Bibcode:2000A&A...355L..27H.
  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. Bibcode:1989ApJS...71..245K. doi:10.1086/191373.
  4. Paunzen, E. (2022). "Catalogue of stars measured in the Geneva seven-colour photometric system". Astronomy and Astrophysics. 661: A89. arXiv:2111.04810. Bibcode:2022A&A...661A..89P. doi:10.1051/0004-6361/202142355. S2CID 244728366.
  5. Brown, A. G. A.; et al. (Gaia collaboration) (August 2018). "Gaia Data Release 2: Summary of the contents and survey properties". Astronomy & Astrophysics. 616. A1. arXiv:1804.09365. Bibcode:2018A&A...616A...1G. doi:10.1051/0004-6361/201833051. Gaia DR2 record for this source at VizieR.
  6. 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. S2CID 119257644.
  7. Anders, F.; Khalatyan, A.; Chiappini, C.; Queiroz, A. B.; Santiago, B. X.; Jordi, C.; Girardi, L.; Brown, A. G. A.; Matijevic, G.; Monari, G.; Cantat-Gaudin, T. (2019-08-01). "Photo-astrometric distances, extinctions, and astrophysical parameters for Gaia DR2 stars brighter than G = 18". Astronomy and Astrophysics. 628: A94. arXiv:1904.11302. Bibcode:2019A&A...628A..94A. doi:10.1051/0004-6361/201935765. ISSN 0004-6361. S2CID 131780028.
  8. Stassun, Keivan G.; et al. (September 2018). "The TESS Input Catalog and Candidate Target List". The Astronomical Journal. 156 (3): 102. arXiv:1706.00495. Bibcode:2018AJ....156..102S. doi:10.3847/1538-3881/aad050. ISSN 0004-6256.
  9. Glebocki, R.; Gnacinski, P. (2005). "VizieR Online Data Catalog: Catalog of Stellar Rotational Velocities (Glebocki+ 2005)". VizieR On-line Data Catalog: III/244. Originally Published in: 2005csss...13..571G; 2005yCat.3244....0G. 3244. Bibcode:2005yCat.3244....0G.
  10. "36 Cam". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 29 April 2017.
  11. 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. S2CID 14878976.
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