134 Tauri

134 Tauri
Observation data
Epoch J2000      Equinox J2000
Constellation Taurus
Right ascension 05h 49m 32.92974s[1]
Declination +12° 39′ 04.7582″[1]
Apparent magnitude (V) 4.89[2]
Characteristics
Spectral type B9 IV[3]
B−V color index −0.068±0.004[2]
Astrometry
Radial velocity (Rv)+20.5±0.1[4] km/s
Proper motion (μ) RA: −22.98[1] mas/yr
Dec.: −18.22[1] mas/yr
Parallax (π)13.11 ± 0.33 mas[1]
Distance249 ± 6 ly
(76 ± 2 pc)
Absolute magnitude (MV)+0.48[2]
Details[5]
Mass2.99 M☉
Radius3.3[6] R☉
Luminosity78.3+4.5
−8.8[7] L☉
Surface gravity (log g)4.02±0.14 cgs
Temperature11,150±379 K
Rotational velocity (v sin i)26 km/s
Age248 Myr
Other designations
134 Tau, BD+12° 912, HD 38899, HIP 27511, HR 2010, SAO 94888, WDS J05495+1239A[8]
Database references
SIMBADdata

134 Tauri is a single[9] star in the zodiac constellation of Taurus. Its apparent magnitude is 4.89,[2] which is bright enough to be faintly visible to the naked eye. The distance to this star, based upon an annual parallax shift of 13.11±0.33 mas,[1] is around 249 light years. The star is moving further from the Sun with a heliocentric radial velocity of +20.5 km/s, having made its closest approach some three million years ago at a distance of 107 ly (32.7 pc).[2]

This is an MK-standard star with a stellar classification of B9 IV,[3] matching a subgiant star that is evolving away from the main sequence having exhausted the hydrogen at its core. It has a low projected rotational velocity[3] of 26 km/s.[5] The star is about 248 million years old with three[5] times the mass of the Sun and approximately 3.3 times the Sun's radius.[6] It is radiating around 78[7] times the Sun's luminosity from its photosphere at an effective temperature of about 11,150 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 Cite error: The named reference Anderson2012 was invoked but never defined (see the help page).
  3. ^ a b c Cite error: The named reference Garrison1994 was invoked but never defined (see the help page).
  4. ^ Cite error: The named reference DeBruijne2012 was invoked but never defined (see the help page).
  5. ^ a b c d Cite error: The named reference David2015 was invoked but never defined (see the help page).
  6. ^ a b Cite error: The named reference cadars was invoked but never defined (see the help page).
  7. ^ a b Cite error: The named reference Zorec2012 was invoked but never defined (see the help page).
  8. ^ Cite error: The named reference SIMBAD was invoked but never defined (see the help page).
  9. ^ Cite error: The named reference chini2012 was invoked but never defined (see the help page).