114 Tauri

This article is about o Tauri. Not to be confused with ο (Omicron) Tauri.
114 Tauri
Observation data
Epoch J2000      Equinox J2000
Constellation Taurus
Right ascension 05h 27m 38.08406s[1]
Declination +21° 56′ 13.0738″[1]
Apparent magnitude (V) 4.88[2]
Characteristics
Spectral type B2.5 IV[3] or B2.5 V[4]
B−V color index −0.14[2]
Astrometry
Radial velocity (Rv)16.5±0.1[2] km/s
Proper motion (μ) RA: +0.05[1] mas/yr
Dec.: −7.06[1] mas/yr
Parallax (π)5.22 ± 0.21 mas[1]
Distance620 ± 30 ly
(192 ± 8 pc)
Absolute magnitude (MV)−1.58[5]
Details[6]
Mass7.3±0.3 M☉
Radius3.9±0.4 R☉
Luminosity2,454+497
−365 L☉
Surface gravity (log g)4.15±0.07 cgs
Temperature20,700±200 K
Rotational velocity (v sin i)10[7] km/s
Age22.0±3.1[8] Myr
Other designations
o Tau, 114 Tau, BD+21° 847, HD 35708, HIP 25539, HR 1810, SAO 77184, WDS J05276+2156A[9]
Database references
SIMBADdata

114 Tauri, or o Tauri, is a single,[10] blue-white hued star in the zodiac constellation of Taurus. It is a faint star but visible to the naked eye with an apparent visual magnitude of 4.88.[2] The distance to this star, as determined from its annual parallax shift of 5.22±0.21 mas,[1] is roughly 620 light years. It is moving further from the Sun with a heliocentric radial velocity of 16.5 km/s, having come as close as 240 ly (75 pc) some 9.6 million years ago.[2] It is a member of the Cas-Tau OB association of co-moving stars,[6] and has a peculiar velocity of 8.3 km/s.[11]

Grenier et al. (1999) assigned this star to a stellar classification of B2.5 IV,[3] which matches the luminosity class of an evolving subgiant star. Abt (2008) listed it as a B-type main-sequence star with a class of B2.5 V.[4] With an age of about 22[8] million years, 114 Tauri has an estimated 7 times the mass of the Sun and four times the Sun's radius. The star is radiating about 2,454 times the Sun's luminosity from its photosphere at an effective temperature of around 20,700 K.[6] It appears to have a relatively low rotation rate for a star of its mass and age, showing a projected rotational velocity of 10 km/s.[7]

  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 Cite error: The named reference grenier1999 was invoked but never defined (see the help page).
  4. ^ a b Cite error: The named reference Abt2008 was invoked but never defined (see the help page).
  5. ^ Cite error: The named reference huang2012 was invoked but never defined (see the help page).
  6. ^ a b c Cite error: The named reference Nieva2014 was invoked but never defined (see the help page).
  7. ^ a b Cite error: The named reference Strom2005 was invoked but never defined (see the help page).
  8. ^ a b Cite error: The named reference Tetzlaff2011 was invoked but never defined (see the help page).
  9. ^ Cite error: The named reference SIMBAD was invoked but never defined (see the help page).
  10. ^ Cite error: The named reference Eggleton2008 was invoked but never defined (see the help page).
  11. ^ Cite error: The named reference Bobylev2013 was invoked but never defined (see the help page).