53 Aurigae

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53 Aurigae
Observation data
Epoch J2000      Equinox J2000
Constellation Auriga
Right ascension 06h 38m 23.00827s[1]
Declination +28° 59′ 03.6700″[1]
Apparent magnitude (V) 5.744[2]
Spectral type B9 Mn / F0m[3]
U−B color index −0.07[4]
B−V color index −0.02[4]
Proper motion (μ) RA: −16.61[1] mas/yr
Dec.: −15.94[1] mas/yr
Parallax (π) 9.41 ± 0.62 mas
Distance 350 ± 20 ly
(106 ± 7 pc)
Period (P) 38.90 yr
Semi-major axis (a) 0.159″
Eccentricity (e) 0.557
Inclination (i) 119.5°
Longitude of the node (Ω) 113.5°
Periastron epoch (T) B 1976.73
Argument of periastron (ω)
53 Aur A
Mass 2.49 ± 0.13[6] M
Surface gravity (log g) 4.0[3] cgs
Temperature 10750[3] K
Rotational velocity (v sin i) 25[3] km/s
53 Aur B
Surface gravity (log g) 4.0[3] cgs
Temperature 7250[3] K
Rotational velocity (v sin i) 0[3] km/s
Other designations
BD+29° 1293, GC 8649, HD 47152, HIP 31737, HR 2425, SAO 78571, PPM 96293, CCDM J06384+2859, WDS J06384+2859, TYC 1892-236-1, GSC 01892-00236
Database references

53 Aurigae is a binary star in the constellation Auriga. Its apparent magnitude is 5.74.[2] Parallax estimates made by the Hipparcos spacecraft put it at a distance of 350 light-years (106 parsecs) away.[1]

The two components of 53 Aurigae orbit each other every 39 years.[5] The primary component, 53 Aurigae A, is chemically peculiar since it contains higher-than-normal amounts of manganese,[3] but also europium, chromium, and mercury.[6] It is a B-type main-sequence star,[6] while the secondary component, 53 Aurigae B, is an early F-type main-sequence star.[6] The total mass of the system is estimated to be 4.8 M.[6]


  1. ^ a b c d e van Leeuwen, F.; et al. (2007). "Validation of the new Hipparcos reduction". Astronomy and Astrophysics. 474 (2): 653–664. arXiv:0708.1752Freely accessible. Bibcode:2007A&A...474..653V. doi:10.1051/0004-6361:20078357. 
  2. ^ a b 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. ^ a b c d e f g h Zverko, J.; Žižňovský, J.; Mikulášek, Z.; Iliev, I. Kh. (2008). "53 Aurigae revisited: a B9Mn + F0m composite spectrum". Contributions of the Astronomical Observatory Skalnaté Pleso. 38 (2): 467–468. Bibcode:2008CoSka..38..467Z. 
  4. ^ a b Mermilliod, J.-C. (1986). "Compilation of Eggen's UBV data, transformed to UBV (unpublished)". Catalogue of Eggen's UBV data. Bibcode:1986EgUBV........0M. 
  5. ^ a b "Sixth Catalog of Orbits of Visual Binary Stars". United States Naval Observatory. Retrieved 28 May 2017. 
  6. ^ a b c d e Wraight, K. T.; Fossati, L.; Netopil, M.; Paunzen, E.; Rode-Paunzen, M.; Bewsher, D.; Norton, A. J.; White, Glenn J. (2012). "A photometric study of chemically peculiar stars with the STEREO satellites - I. Magnetic chemically peculiar stars★". Monthly Notices of the Royal Astronomical Society. 420: 757. arXiv:1110.6283Freely accessible. Bibcode:2012MNRAS.420..757W. doi:10.1111/j.1365-2966.2011.20090.x.