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HD 27245 is a solitary[10] star in the northern circumpolar constellation Camelopardalis. It has an apparent magnitude of 5.52,[2] making it faintly visible to the naked eye. Parallax measurements place it approximately 607 light years[1] away from it the Solar System; it is drifting further away with a heliocentric radial velocity of 25.16 km/s.[6]

HD 27245
Observation data
Epoch J2000      Equinox J2000
Constellation Camelopardalis
Right ascension 04h 21m 47.6492s[1]
Declination +60° 44′ 08.2461″[1]
Apparent magnitude (V) 5.52[2]
Characteristics
Spectral type M0 III[3]
U−B color index +1.81[4]
B−V color index +1.50[4]
Variable type suspected[5]
Astrometry
Radial velocity (Rv)+25.16±0.27[6] km/s
Proper motion (μ) RA: +55.890[1] mas/yr
Dec.: −114.046[1] mas/yr
Parallax (π)5.3716 ± 0.0848 mas[1]
Distance607 ± 10 ly
(186 ± 3 pc)
Absolute magnitude (MV)−0.40[2]
Details
Mass1.08[7] M☉
Radius36.11[8] R☉
Luminosity273[8] L☉
Surface gravity (log g)1.29[8] cgs
Temperature3,921[8] K
Metallicity [Fe/H]+0.11[7] dex
Other designations
NSV 1558, BD+60° 800, FK5 2317, HD 27245, HIP 20376, HR 1335, SAO 13113[9]
Database references
SIMBADdata

HD 27245 is an aging red giant with a stellar classification of M0 III. At present it has 108% the mass of the Sun[7] and an enlarged radius of 36.11 R☉.[8] It shines at 273 times the luminosity of the Sun from its photosphere at an effective temperature of 3,921 K,[8] giving it a red glow. HD 27245's iron abundance is 129% that of the Sun.[7]

HD 27245 is a suspected variable star that fluctuates by 0.05 magnitudes.[5]


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. Famaey, B.; et al. (January 2005). "Local kinematics of K and M giants from CORAVEL/Hipparcos/Tycho-2 data. Revisiting the concept of superclusters". Astronomy and Astrophysics. 430 (1): 165–186. arXiv:astro-ph/0409579. Bibcode:2005A&A...430..165F. doi:10.1051/0004-6361:20041272. S2CID 17804304.
  3. Appenzeller, Immo (April 1967). "MK Spectral Types for 185 Bright Stars". Publications of the Astronomical Society of the Pacific. 79 (467): 102. Bibcode:1967PASP...79..102A. doi:10.1086/128449.
  4. Mermilliod, J.-C. (1986). "Compilation of Eggen's UBV data, transformed to UBV (unpublished)". Catalogue of Eggen's UBV Data. SIMBAD. Bibcode:1986EgUBV........0M.
  5. Samus, N. N.; Durlevich, O. V. (November 2004). "VizieR Online Data Catalog: Combined General Catalogue of Variable Stars (Samus+ 2004)". VizieR Online Data Catalog: II/250. Bibcode:2004yCat.2250....0S.
  6. de Bruijne, J. H. J.; Eilers, A.-C. (October 2012). "Radial velocities for the HIPPARCOS-Gaia Hundred-Thousand-Proper-Motion project". Astronomy & Astrophysics. 546: 14. arXiv:1208.3048. Bibcode:2012A&A...546A..61D. doi:10.1051/0004-6361/201219219. S2CID 59451347. A61.
  7. Anders, F.; et al. (1 August 2019). "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. McDonald, I.; Zijlstra, A. A.; Watson, R. A. (2017). "Fundamental parameters and infrared excesses of Tycho-Gaia stars". Monthly Notices of the Royal Astronomical Society. 471 (1): 770. arXiv:1706.02208. Bibcode:2017MNRAS.471..770M. doi:10.1093/mnras/stx1433.
  9. "HD 27245". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2018-06-05.
  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.




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