59 Aurigae

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59 Aurigae
Observation data
Epoch J2000      Equinox J2000
Constellation Auriga
Right ascension  06h 53m 01.41099s[1]
Declination +38° 52′ 08.9353″[1]
Apparent magnitude (V) 6.099[2]
Spectral type F2V[3]
U−B color index +0.14[4]
B−V color index +0.38[4]
Variable type δ Sct[5]
Radial velocity (Rv)1.0±4.3[6] km/s
Proper motion (μ) RA: −3.935[1] mas/yr
Dec.: 6.454[1] mas/yr
Parallax (π)6.7493 ± 0.0501[1] mas
Distance483 ± 4 ly
(148 ± 1 pc)
Absolute magnitude (MV)0.23±0.12[7]
Mass2.49±0.08[8] M
[1] R
Luminosity63.87±0.65[1] L
Temperature6,808[7] K
Metallicity [Fe/H]0.18[7] dex
Rotational velocity (v sin i)165[8] km/s
Age700±100[7] Myr
Other designations
59 Aur, OX Aur, BD+39°1771, GC 8993, HD 50018, HIP 33041, HR 2539, SAO 59571, PPM 72197, ADS 5534, CCDM J06530+3852, WDS J06530+3852, TYC 2942-2005-1, GSC 02942-02005
Database references

59 Aurigae, often abbreviated as 59 Aur, is a star in the constellation Auriga. Its baseline apparent magnitude is 6.1,[2] meaning it can just barely be seen with the naked eye as a dim, yellow-white hued star. Based on parallax measurements, it is located about 483 light-years (148 parsecs) away from the Sun.[1]

This object is a Delta Scuti variable, meaning it varies in luminosity due to pulsations on its surface, ranging in magnitude from 5.94 down to 6.14 with a period of 0.154412 days (3.7 h).[5] For that reason, it has been given the variable star designation OX Aurigae. The star's spectrum matches that of an F-type main-sequence star and it has a spectral type of F2V.[3] It has 2.5[8] times the mass of the Sun and 5.7[1] times the Sun's radius. 59 Aurigae is thought to be around 700 million years old, and is radiating 64[1] times the Sun's luminosity from its photosphere an effective temperature of 6,808 K.[7]


  1. ^ a b c d e f g h i j 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.
  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 Abt, Helmut A.; Morrell, Nidia I. (1995). "The Relation between Rotational Velocities and Spectral Peculiarities among A-Type Stars". Astrophysical Journal Supplement. 99: 135. Bibcode:1995ApJS...99..135A. doi:10.1086/192182.
  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 Samus, N. N.; et al. (2017), "General Catalogue of Variable Stars", Astronomy Reports, 5.1, 61 (1): 80–88, Bibcode:2017ARep...61...80S, doi:10.1134/S1063772917010085.
  6. ^ Gontcharov, G. A. (2006). "Pulkovo Compilation of Radial Velocities for 35 495 Hipparcos stars in a common system". Astronomy Letters. 32 (11): 759–771. arXiv:1606.08053. Bibcode:2006AstL...32..759G. doi:10.1134/S1063773706110065.
  7. ^ a b c d e Nordström, B.; et al. (2004). "The Geneva-Copenhagen survey of the Solar neighbourhood. Ages, metallicities, and kinematic properties of ˜14 000 F and G dwarfs". Astronomy and Astrophysics. 418: 989–1019. arXiv:astro-ph/0405198. Bibcode:2004A&A...418..989N. doi:10.1051/0004-6361:20035959.
  8. ^ a b c Zorec, J.; Royer, F. (2012). "Rotational velocities of A-type stars. IV. Evolution of rotational velocities". Astronomy & Astrophysics. 537: A120. arXiv:1201.2052. Bibcode:2012A&A...537A.120Z. doi:10.1051/0004-6361/201117691. A120.

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