Mu Tauri

μ Tauri, Latinized as Mu Tauri, is a single^[11] star in the equatorial constellation of Taurus. It has a blue-white hue and is faintly visible to the naked eye with an apparent visual magnitude of 4.27.^[2] The star is located approximately 490 light years distant from the Sun based on parallax,^[1] and is drifting further away with a radial velocity of +16 km/s.^[5]

Mu Tauri

Location of μ Tauri (circled)
Observation data Epoch J2000      Equinox J2000
Constellation	Taurus
Right ascension	04h 15m 32.05687s[1]
Declination	08° 53′ 32.4916″[1]
Apparent magnitude (V)	4.27[2]
Characteristics
Spectral type	B3IV[3]
U−B color index	−0.51[4]
B−V color index	−0.05[4]
Astrometry
Radial velocity (Rv)	+16.3±0.6[5] km/s
Proper motion (μ)	RA: +20.881[1] mas/yr Dec.: −22.789[1] mas/yr
Parallax (π)	6.6651±0.3319 mas[1]
Distance	490 ± 20 ly (150 ± 7 pc)
Absolute magnitude (MV)	−1.45[2]
Details
Mass	6.7[6] M☉
Luminosity	462[2] L☉
Surface gravity (log g)	3.75[7] cgs
Temperature	16,980[7] K
Metallicity [Fe/H]	−0.16[2] dex
Rotational velocity (v sin i)	89[8] km/s
Age	252[9] Myr
Other designations
μ Tau, 49 Tauri, BD+08°657, FK5 1118, GC 5134, HD 26912, HIP 116820, HR 1320, SAO 111696, GSC 00667-00839[10]
Database references
SIMBAD	data

This object has a stellar classification of B3IV,^[3] matching a B-type subgiant star. In the past this star was thought to have a variable radial velocity, but is now considered constant.^[12] It is 252^[9] million years old and is spinning with a projected rotational velocity of 89 km/s.^[8] The star has 6.7^[6] times the mass of the Sun and is radiating 462^[2] times the Sun's luminosity from its photosphere at an effective temperature of 16,980 K.^[7] It is emitting an infrared excess at a wavelength of 18 μm, making it a candidate host of a faint warm debris disk.^[13]