72 Tauri

72 Tauri
Location of 72 Tauri (circled)
Observation data
Epoch J2000.0      Equinox J2000.0 (ICRS)
Constellation Taurus
Right ascension 04h 27m 17.4508s[1]
Declination +22° 59′ 46.778″[1]
Apparent magnitude (V) 5.514[2]
Characteristics
Evolutionary stage main sequence[1]
Spectral type B7V[3]
U−B color index −0.48[4]
B−V color index −0.10[4]
Astrometry
Radial velocity (Rv)32.2±1.1[5] km/s
Proper motion (μ) RA: −1.409[1] mas/yr
Dec.: −13.722[1] mas/yr
Parallax (π)7.9390 ± 0.398 mas[1]
Distance410 ± 20 ly
(126 ± 6 pc)
Absolute magnitude (MV)+0.21[6]
Details
Mass3.47[1] M☉
Radius2.8[1] R☉
Luminosity185[1] L☉
Surface gravity (log g)3.97[1] cgs
Temperature12,689[1] K
Rotational velocity (v sin i)115[7] km/s
Age38[8] Myr
Other designations
υ2 Tau, 72 Tauri, BD+22°699, HD 28149, HIP 20789, HR 1399[9][10]
Database references
SIMBADdata

72 Tauri (abbreviated 72 Tau) is a possible binary star in the zodiac constellation of Taurus. It is faintly visible to the naked eye with an apparent visual magnitude of +5.5, although only 0.29° from the brighter υ Tauri. Based upon an annual parallax shift of 7.9 mas seen from Earth, it is around 410 light years from the Sun.

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