39 Aurigae

39 Aurigae
Observation data
Epoch J2000      Equinox J2000
Constellation Auriga
Right ascension 06h 05m 03.38423s[1]
Declination +42° 58′ 53.8846″[1]
Apparent magnitude (V) 5.90[2]
Characteristics
Spectral type F1 V[2]
B−V color index 0.358±0.005[2]
Astrometry
Radial velocity (Rv)+34.1±2.9[3] km/s
Proper motion (μ) RA: −45.17[1] mas/yr
Dec.: −144.26[1] mas/yr
Parallax (π)20.11 ± 0.40 mas[1]
Distance162 ± 3 ly
(49.7 ± 1.0 pc)
Absolute magnitude (MV)2.45[4]
Details
Mass1.45[5] M☉
Luminosity9.36[2] L☉
Surface gravity (log g)4.14±0.14[5] cgs
Temperature7,161±243[5] K
Metallicity [Fe/H]−0.03±0.15[2] dex
Rotational velocity (v sin i)87.8±4.4[4] km/s
Age603[5] Myr
Other designations
39 Aur, BD+42° 1477, HD 41074, HIP 28823, HR 2132, SAO 40840[6]
Database references
SIMBADdata

39 Aurigae is a single[7] star in the constellation of Auriga. The designation is from the star catalogue of English astronomer John Flamsteed, first published in 1712. The star is just barely visible to the naked eye, having an apparent visual magnitude of 5.90.[2] Based upon an annual parallax shift of 20.11[1] mas as seen from Earth, it is located 112 light years away. 5 Andromedae is moving further from the Sun with a radial velocity of +34 km/s.[3] It has a relatively high proper motion, advancing across the celestial sphere at the rate of 0.151 arc seconds per year.[8]

This is an F-type main-sequence star with a stellar classification of F1 V.[2] It is an estimated 603[5] million years old with a relatively high rate of spin, showing a projected rotational velocity of around 88 km/s.[4] The star has 1.45[5] times the mass of the Sun and it is radiating 9.36[2] times the Sun's luminosity from its photosphere at an effective temperature of around 7,161 K.[5]

  1. ^ a b c d e f Cite error: The named reference vanLeeuwen2007 was invoked but never defined (see the help page).
  2. ^ a b c d e f g h Cite error: The named reference Anderson2012 was invoked but never defined (see the help page).
  3. ^ a b Cite error: The named reference deBruijne2012 was invoked but never defined (see the help page).
  4. ^ a b c Cite error: The named reference Eiff2012 was invoked but never defined (see the help page).
  5. ^ a b c d e f g Cite error: The named reference David2015 was invoked but never defined (see the help page).
  6. ^ "39 Aur". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2018-02-07.
  7. ^ Cite error: The named reference Eggleton2008 was invoked but never defined (see the help page).
  8. ^ Cite error: The named reference Lepine2005 was invoked but never defined (see the help page).