| Observation data Epoch J2000.0 Equinox J2000.0 | |
|---|---|
| Constellation | Taurus |
| Right ascension | 04h 28m 26.37004s[1] |
| Declination | +16° 21′ 34.8231″[1] |
| Apparent magnitude (V) | 4.96[2] |
| Characteristics | |
| Spectral type | K1 IIIb[2] |
| B−Vcolor index | 1.137[3] |
| Astrometry | |
| Radial velocity (Rv) | +16.24±0.20[4] km/s |
| Proper motion (μ) | RA: +7.91[1]mas/yr Dec.: +18.14[1]mas/yr |
| Parallax (π) | 17.47±0.42 mas[1] |
| Distance | 187 ± 4 ly (57 ± 1 pc) |
| Absolute magnitude (MV) | 1.18[3] |
| Details[3] | |
| Mass | 1.53±0.23 M☉ |
| Radius | 11[5] R☉ |
| Luminosity | 40.74+2.02 −1.92 L☉ |
| Surface gravity (log g) | 2.81±0.28 cgs |
| Temperature | 4,697±60 K |
| Metallicity [Fe/H] | −0.08±0.11 dex |
| Rotational velocity (v sin i) | 2.5[5] km/s |
| Age | 2.7+1.0 −1.5 Gyr |
| Other designations | |
| 75 Tau,BD+16° 605,HD 28292,HIP 20877,HR 1407,SAO 93950,WDS J04284+1622AB[6] | |
| Database references | |
| SIMBAD | data |
75 Tauri is a single,[7] orange-huedstar in thezodiac ofconstellationTaurus. It is a dim star but visible to the naked eye with anapparent visual magnitude of 4.96.[2] Based upon an annualparallax shift of 17.47 mas as seen from Earth's orbit, it is located around 187 light years away. Due to its position near theecliptic, it is subject tolunar occultations.[8] The star is moving further from the Sun with a heliocentricradial velocity of +16 km/s.[4]
Thestellar classification of 75 Tauri is K1 IIIb,[2] indicating it is an aginggiant star that has exhausted the supply of hydrogen at its core. At the estimated age of roughly 2.7 billion years,[3] this has become ared clump star that is generating energy throughhelium fusion in itscore region.[9] The star has 1.5 times themass of the Sun and has expanded to 11 times theSun's radius. It is radiating 41 times theSun's luminosity from its enlargedphotosphere at aneffective temperature of around 4,697 K.[3]
