R Centauri
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| Observation data Epoch J2000.0 |
|
|---|---|
| Constellation (pronunciation) |
Centaurus |
| Right ascension | 14h16m34.2s |
| Declination | −59°54′50″ |
| Apparent magnitude (V) | +7.18 |
| Characteristics | |
| Spectral type | M5IIe |
| U-B color index | +1.24 |
| B-V color index | +2.04 |
| Variable type | Mira |
| Astrometry | |
| Radial velocity (Rv) | −20 km/s |
| Proper motion (μ) | RA: −10.28 mas/yr Dec.: −5.90 mas/yr |
| Parallax (π) | 1.56 ± 0.84 mas |
| Distance | 2100 ± 1100 ly (640 ± 350 pc) |
| Absolute magnitude (MV) | −1.84 |
| Other designations | |
| Database references | |
| SIMBAD | data |
For r Centauri, see HD 115310.
R Centauri (R Cen) is a variable star in the constellation Centaurus. It is approximately 2100 light years from Earth.
The primary component, R Centauri A, is a red M-type bright giant with a mean apparent magnitude of +7.18. It is classified as a Mira variable and its brightness varies from magnitude +5.3 to +11.8 with a period of 546.2 days. It is also an H2O maser.
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