37 Camelopardalis

37 Camelopardalis is a solitary[10] star in the northern circumpolar constellation Camelopardalis. It has an apparent magnitude of 5.36, allowing it to be seen with the naked eye under ideal conditions. Located about 444 light years away, the star is receding with a heliocentric radial velocity of 30.86 km/s.

37 Camelopardalis
Observation data
Epoch J2000.0      Equinox J2000.0 (ICRS)
Constellation Camelopardalis
Right ascension 06h 09m 59.0135s[1]
Declination +58° 56′ 08.494″[1]
Apparent magnitude (V) 5.36±0.01[2]
Characteristics
Spectral type G8 III[3]
U−B color index +0.92[4]
B−V color index +1.10[4]
Astrometry
Radial velocity (Rv)30.86±0.12[1] km/s
Proper motion (μ) RA: +16.787[1] mas/yr
Dec.: +18.619[1] mas/yr
Parallax (π)7.3457 ± 0.0781 mas[1]
Distance444 ± 5 ly
(136 ± 1 pc)
Absolute magnitude (MV)+0.02[5]
Details
Mass1.43[6] M☉
Radius19.25[7] R☉
Luminosity129[6] L☉
Surface gravity (log g)2.01±0.15[8] cgs
Temperature4,609[6] K
Metallicity [Fe/H]−0.50±0.07[8] dex
Rotational velocity (v sin i)1.5±1.2[9] km/s
Age3.5[6] Gyr
Other designations
37 Cam, AG+58°528, BD+58°897, GC 7796, HD 41597, HIP 29246, HR 2152, SAO 25597
Database references
SIMBADdata

37 Camelopardalis has a stellar classification of G8 III,[3] indicating that the object is an ageing yellow giant. It has an angular diameter of 1.36±0.02 mas,[11] with an actual size of 19.3 R☉.[7] At present it has 1.43 times the mass of the Sun and shines at 129 times the luminosity of the Sun from its photosphere at an effective temperature of 4,609 K,[6] giving it a yellow orange glow. 37 Cam is a metal poor star with an iron abundance only 32% that of the Sun[8] and spins modestly with a projected rotational velocity of 1.5 km/s.[9]

References
  1. Vallenari, A.; et al. (Gaia collaboration) (2023). "Gaia Data Release 3. Summary of the content and survey properties". Astronomy and Astrophysics. 674: A1. arXiv:2208.00211. Bibcode:2023A&A...674A...1G. doi:10.1051/0004-6361/202243940. S2CID 244398875. Gaia DR3 record for this source at VizieR.
  2. Høg, E.; Fabricius, C.; Makarov, V. V.; Urban, S.; Corbin, T.; Wycoff, G.; Bastian, U.; Schwekendiek, P.; Wicenec, A. (March 2000). "The Tycho-2 catalogue of the 2.5 million brightest stars". Astronomy and Astrophysics. 355: L27–L30. Bibcode:2000A&A...355L..27H. ISSN 0004-6361.
  3. Frasca, A.; Covino, E.; Spezzi, L.; Alcalá, J. M.; Marilli, E.; Fűrész, G.; Gandolfi, D. (December 2009). "REM near-IR and optical photometric monitoring of pre-main sequence stars in Orion: Rotation periods and starspot parameters". Astronomy & Astrophysics. 508 (3): 1313–1330. Bibcode:2009A&A...508.1313F. doi:10.1051/0004-6361/200913327. ISSN 0004-6361.
  4. Jennens, P. A.; Helfer, H. L. (1 September 1975). "A New Photometric Metal Abundance and Luminosity Calibration for Field G and K Giants". Monthly Notices of the Royal Astronomical Society. 172 (3): 667–679. Bibcode:1975MNRAS.172..667J. doi:10.1093/mnras/172.3.667. ISSN 0035-8711.
  5. Anderson, E.; Francis, Ch. (May 2012). "XHIP: An extended hipparcos compilation". Astronomy Letters. 38 (5): 331–346. arXiv:1108.4971. Bibcode:2012AstL...38..331A. doi:10.1134/S1063773712050015. ISSN 1063-7737. S2CID 255204555.
  6. Luck, R. Earle (September 2015). "Abundances in the Local Region. I. G and K Giants". The Astronomical Journal. 150 (3): 88. arXiv:1507.01466. Bibcode:2015AJ....150...88L. doi:10.1088/0004-6256/150/3/88. ISSN 0004-6256.
  7. Stassun, Keivan G.; et al. (9 September 2019). "The Revised TESS Input Catalog and Candidate Target List". The Astronomical Journal. 158 (4): 138. arXiv:1905.10694. Bibcode:2019AJ....158..138S. doi:10.3847/1538-3881/ab3467. ISSN 0004-6256.
  8. Prugniel, Ph.; Vauglin, I.; Koleva, M. (July 2011). "The atmospheric parameters and spectral interpolator for the MILES stars". Astronomy & Astrophysics. 531: A165. arXiv:1104.4952. Bibcode:2011A&A...531A.165P. doi:10.1051/0004-6361/201116769. ISSN 0004-6361.
  9. de Medeiros, J. R.; Mayor, M. (November 1999). "A catalog of rotational and radial velocities for evolved stars". Astronomy and Astrophysics Supplement Series. 139 (3): 433–460. Bibcode:1999A&AS..139..433D. doi:10.1051/aas:1999401. ISSN 0365-0138.
  10. 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.
  11. Richichi, A.; Percheron, I.; Khristoforova, M. (February 2005). "CHARM2: An updated Catalog of High Angular Resolution Measurements". Astronomy and Astrophysics. 431 (2): 773–777. Bibcode:2005A&A...431..773R. doi:10.1051/0004-6361:20042039.
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