Iota Tauri

Iota Tauri, Latinized from ι Tauri, is a white-hued star in the zodiac constellation Taurus and an outlying member of the Hyades star cluster.^[9] It is visible to the naked eye with an apparent visual magnitude of 4.62,^[2] and is located at an estimated distance of about 173 light years based upon parallax measurements.^[1] The star is moving away from the Sun with a radial velocity of +38 km/s.^[5]

ι Tauri

Location of ι Tauri (circled)
Observation data Epoch J2000      Equinox J2000
Constellation	Taurus
Right ascension	05h 03m 05.74725s[1]
Declination	+21° 35′ 23.8627″[1]
Apparent magnitude (V)	4.62[2]
Characteristics
Spectral type	A7 V[3]
U−B color index	+0.15[4]
B−V color index	+0.16[4]
Astrometry
Radial velocity (Rv)	+38.30[5] km/s
Proper motion (μ)	RA: +68.88[1] mas/yr Dec.: -41.06[1] mas/yr
Parallax (π)	18.88±0.30 mas[1]
Distance	173 ± 3 ly (53.0 ± 0.8 pc)
Absolute magnitude (MV)	1.00[2]
Details
Mass	2.22[6] M☉
Radius	2.6[7] R☉
Luminosity	36[6] L☉
Surface gravity (log g)	3.97[8] cgs
Temperature	8,054[6] K
Metallicity [Fe/H]	+0.15[2] dex
Rotational velocity (v sin i)	131[6] km/s
Age	717[8] Myr
Other designations
ι Tau, 102 Tauri, BD+21°751, FK5 184, GC 6158, HD 32301, HIP 23497, HR 1620, SAO 76920, WDS J05031+2135AB, GSC 01293-02747
Database references
SIMBAD	data

This has been reported as a double star with two components at separation 0.1", both of type A7V and magnitude 5.4.^[10][11] The combined spectrum matches a stellar classification of A7 V,^[3] which would normally indicate an A-type main-sequence star that is generating energy through hydrogen fusion at its core. It has an estimated age of 717^[8] million years.