| Observation data Epoch J2000 Equinox J2000 |
|
|---|---|
| Constellation | Andromeda |
| Right ascension | 01h 40m 34.817s |
| Declination | +40° 34′ 37.377″ |
| Apparent magnitude (V) | 4.96 |
| Characteristics | |
| Spectral type | B8III |
| U−B color index | -0.41 |
| B−V color index | -0.09 |
| Variable type | Variable Star |
| Astrometry | |
| Radial velocity (Rv) | -14 km/s |
| Proper motion (μ) | RA: 16.67 mas/yr Dec.: -23.50 mas/yr |
| Parallax (π) | 4.79 ± 0.74 mas |
| Distance | approx. 700 ly (approx. 210 pc) |
| Absolute magnitude (MV) | 4.869 |
| Other designations | |
| Database references | |
| SIMBAD | data |
| Database references | |
| SIMBAD | data |
Tau Andromedae (τ And, τ Andromedae) is a star in the constellation Andromeda. It is approximately 681 light years from Earth. This is a blue-white B-type giant with an apparent magnitude of +4.96.
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