19 Aurigae

19 Aurigae

A light curve for 19 Aurigae, adapted from Chistyakov and Sokolov (1999)[1]
Observation data
Epoch J2000      Equinox J2000
Constellation Auriga
Right ascension 05h 20m 00.92110s[2]
Declination +33° 57′ 28.9949″[2]
Apparent magnitude (V) 5.05[3]
Characteristics
Evolutionary stage bright giant
Spectral type A5 II+[4]
B−V color index 0.287±0.004[3]
Astrometry
Radial velocity (Rv)−4.3±0.9[3] km/s
Proper motion (μ) RA: −0.264[2] mas/yr
Dec.: −3.415[2] mas/yr
Parallax (π)0.8596 ± 0.0950 mas[2]
Distanceapprox. 3,800 ly
(approx. 1,200 pc)
Details
Mass7.8±0.5[5] M☉
Radius15[6] R☉
Luminosity (bolometric)7,057[7] L☉
Surface gravity (log g)2.10±0.25[8] cgs
Temperature8,300±100[8] K
Metallicity [Fe/H]−0.19[3] dex
Rotational velocity (v sin i)8.0[9] km/s
Age36.0±2.9[5] Myr
Other designations
19 Aur, NSV 1925, BD+33°1013, GC 6515, HD 34578, HIP 24879, HR 1740, SAO 57906[10]
Database references
SIMBADdata

19 Aurigae is a single[11] star located approximately 3,800 light years away from the Sun in the northern constellation Auriga. It is visible to the naked eye as a faint, white-hued star with an apparent visual magnitude of 5.05.[3] The star is moving closer to the Earth with a heliocentric radial velocity of 4.3 km/s.[3]

This is an evolved A-type bright giant star with a stellar classification of A5 II+.[4] It is a variable star of unknown type that ranges in magnitude from 5.03 down to 5.09.[1] This star is an estimated 36[5] million years old with a projected rotational velocity of 8 km/s.[9] It has 8[5] times the mass of the Sun and about 15[6] times the Sun's radius. 19 Aurigae is radiating 7,057[7] times the total luminosity of the Sun from its photosphere at an effective temperature of 8,300 K.[8]

  1. ^ a b Cite error: The named reference Chistyakov1999 was invoked but never defined (see the help page).
  2. ^ a b c d e Cite error: The named reference GaiaDR3 was invoked but never defined (see the help page).
  3. ^ a b c d e f Cite error: The named reference Anderson2012 was invoked but never defined (see the help page).
  4. ^ a b Cite error: The named reference gray2001 was invoked but never defined (see the help page).
  5. ^ a b c d Cite error: The named reference Tetzlaff2011 was invoked but never defined (see the help page).
  6. ^ a b Cite error: The named reference PasinettiFracassini2001 was invoked but never defined (see the help page).
  7. ^ a b Cite error: The named reference Hohle2010 was invoked but never defined (see the help page).
  8. ^ a b c Cite error: The named reference Lyubimkov2010 was invoked but never defined (see the help page).
  9. ^ a b Cite error: The named reference leonid2015 was invoked but never defined (see the help page).
  10. ^ Cite error: The named reference SIMBAD was invoked but never defined (see the help page).
  11. ^ Cite error: The named reference Eggleton2008 was invoked but never defined (see the help page).