| Observation data Epoch J2000.0 Equinox J2000.0 |
|
|---|---|
| Constellation | Centaurus |
| Right ascension | 12h37m42.2s |
| Declination | −48°32′28″ |
| Apparent magnitude (V) | +3.85 |
| Characteristics | |
| Spectral type | A2V |
| U−B color index | +0.03 |
| B−V color index | +0.05 |
| Variable type | none |
| Astrometry | |
| Radial velocity (Rv) | +5 km/s |
| Proper motion (μ) | RA: −186.61 mas/yr Dec.: −6.45 mas/yr |
| Parallax (π) | 24.77 ± 0.69 mas |
| Distance | 131.7 ly (40.4 pc) |
| Absolute magnitude (MV) | +0.82 |
| Other designations | |
| Database references | |
| SIMBAD | data |
Tau Centauri (τ Cen, τ Centauri) is a star in the constellation Centaurus. It is a white A-type main sequence dwarf with an apparent magnitude of +3.85 and is approximately 131.7 light years from Earth.
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