134 Tauri is a single[9] star in the zodiac constellation of Taurus. Its apparent magnitude is 4.89,[2] which is bright enough to be faintly visible to the naked eye. The distance to this star, based upon an annual parallax shift of 13.11±0.33 mas,[1] is around 249 light years. The star is moving further from the Sun with a heliocentric radial velocity of +20.5 km/s, having made its closest approach some three million years ago at a distance of 107 ly (32.7 pc).[2]
Observation data Epoch J2000 Equinox J2000 | |
---|---|
Constellation | Taurus |
Right ascension | 05h 49m 32.92974s[1] |
Declination | +12° 39′ 04.7582″[1] |
Apparent magnitude (V) | 4.89[2] |
Characteristics | |
Spectral type | B9 IV[3] |
B−V color index | −0.068±0.004[2] |
Astrometry | |
Radial velocity (Rv) | +20.5±0.1[4] km/s |
Proper motion (μ) | RA: −22.98[1] mas/yr Dec.: −18.22[1] mas/yr |
Parallax (π) | 13.11 ± 0.33 mas[1] |
Distance | 249 ± 6 ly (76 ± 2 pc) |
Absolute magnitude (MV) | +0.48[2] |
Details[5] | |
Mass | 2.99 M☉ |
Radius | 3.3[6] R☉ |
Luminosity | 78.3+4.5 −8.8[7] L☉ |
Surface gravity (log g) | 4.02±0.14 cgs |
Temperature | 11,150±379 K |
Rotational velocity (v sin i) | 26 km/s |
Age | 248 Myr |
Other designations | |
Database references | |
SIMBAD | data |
This is an MK-standard star with a stellar classification of B9 IV,[3] matching a subgiant star that is evolving away from the main sequence having exhausted the hydrogen at its core. It has a low projected rotational velocity[3] of 26 km/s.[5] The star is about 248 million years old with three[5] times the mass of the Sun and approximately 3.3 times the Sun's radius.[6] It is radiating around 78[7] times the Sun's luminosity from its photosphere at an effective temperature of about 11,150 K.[5]