R Centauri
For r Centauri, see HD 115310.
| Observation data Epoch J2000.0 Equinox J2000.0 | |
|---|---|
| Constellation | Centaurus |
| Right ascension | 14h 16m 34.321s[1] |
| Declination | −59° 54′ 49.29″[1] |
| 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: -9.07 ± 0.91[1] mas/yr Dec.: -7.04 ± 0.71[1] mas/yr |
| Parallax (π) | 2.60 ± 0.76[1] mas |
| Distance | approx. 1,300 ly (approx. 400 pc) |
| Absolute magnitude (MV) | −1.84 |
| Other designations | |
| Database references | |
| SIMBAD | data |
R Centauri (R Cen) is a variable star in the constellation Centaurus. It is approximately 1300 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.
References
- 1 2 3 4 5 van Leeuwen, F. (2007). "Validation of the new Hipparcos reduction". Astronomy and Astrophysics. 474 (2): 653–664. arXiv:0708.1752
. Bibcode:2007A&A...474..653V. doi:10.1051/0004-6361:20078357. Vizier catalog entry
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