2 Centauri
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| Observation data Epoch J2000.0 |
|
|---|---|
| Constellation (pronunciation) |
Centaurus |
| Right ascension | 13h49m26.7s |
| Declination | −34°27′03″ |
| Apparent magnitude (V) | +4.19 |
| Characteristics | |
| Spectral type | M4.5III |
| U-B color index | +1.45 |
| B-V color index | +1.50 |
| Variable type | semiregular |
| Astrometry | |
| Radial velocity (Rv) | +41 km/s |
| Proper motion (μ) | RA: −42.59 mas/yr Dec.: −59.87 mas/yr |
| Parallax (π) | 18.39 ± 0.74 mas |
| Distance | 177.4 ly (54.4 pc) |
| Absolute magnitude (MV) | +0.51 |
| Other designations | |
| Database references | |
| SIMBAD | data |
2 Centauri is a star in the constellation Centaurus.
2 Centauri is a M-type red giant with a mean apparent magnitude of +4.19. It is approximately 177.4 light years from Earth. It is classified as a semiregular variable star and its brightness varies from magnitude +4.16 to +4.26 with a period of 12. days.
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