Nu Tauri

ν Tauri, Latinized as Nu Tauri, is a single^[11] star in the zodiac constellation of Taurus. It is a white-hued star and is visible to the naked eye with an apparent visual magnitude of +3.91.^[2] This object is located 117 light years from the Sun based on parallax,^[1] but is drifting closer with a radial velocity of −6 km/s.^[6] It is predicted to come to within roughly 18.4 ly of the Sun in around five million years.^[12]

Nu Tauri

Location of ν Tauri (circled)
Observation data Epoch J2000      Equinox J2000
Constellation	Taurus
Right ascension	04h 03m 09.37966s[1]
Declination	+05° 59′ 21.4792″[1]
Apparent magnitude (V)	3.91[2]
Characteristics
Evolutionary stage	main sequence[3]
Spectral type	A0.5Va[4]
U−B color index	+0.06[5]
B−V color index	+0.03[5]
Astrometry
Radial velocity (Rv)	−5.7±0.9[6] km/s
Proper motion (μ)	RA: +4.72[1] mas/yr Dec.: −3.78[1] mas/yr
Parallax (π)	27.89±0.19 mas[1]
Distance	116.9 ± 0.8 ly (35.9 ± 0.2 pc)
Absolute magnitude (MV)	1.14[2]
Details
Mass	2.25±0.01[3] M☉
Radius	2.87+0.16 −0.31[7] R☉
Luminosity	28.1±0.4[7] L☉
Surface gravity (log g)	4.02[8] cgs
Temperature	7,836+464 −203[7] K
Metallicity [Fe/H]	−0.19±0.08[9] dex
Rotational velocity (v sin i)	83[3] km/s
Age	206[8] Myr
Other designations
ν Ser, 38 Tauri, BD+05°581, FK5 151, GC 4862, HD 25490, HIP 18907, HR 1251, SAO 111579, WDS J04032+0559A, GSC 00079-01585[10]
Database references
SIMBAD	data

This object is an A-type main-sequence star with a stellar classification of A0.5Va.^[4] It is 206^[8] million years old and is rotating with a projected rotational velocity of 83 km/s.^[3] The star has 2.25^[3] times the mass of the Sun and 2.87^[7] times the Sun's radius. It is radiating 28 times the luminosity of the Sun from its photosphere at an effective temperature of 7,836 K.^[7]

Nu Tauri has a magnitude 9.21 visual companion at an angular separation 15.9″.^[13]