RT Carinae
RT Carinae is the bright orange star south of the Trumpler 15 cluster. | |
| Observation data Epoch J2000.0 Equinox J2000.0 | |
|---|---|
| Constellation | Carina |
| Right ascension | 10h 44m 47.148s |
| Declination | −59° 24′ 48.1228″ |
| Apparent magnitude (V) | 8.2 - 9.9 |
| Characteristics | |
| Spectral type | M2+ Iab |
| B−V color index | +2.31 |
| Variable type | LC |
| Astrometry | |
| Radial velocity (Rv) | −21.95±0.58 km/s |
| Proper motion (μ) | RA: −7.432 mas/yr Dec.: +2.851 mas/yr |
| Parallax (π) | 0.470±0.069 mas |
| Distance | approx. 7,000 ly (approx. 2,100 pc) |
| Absolute magnitude (MV) | −6.74 |
| Details | |
| Radius | 1,090 R☉ |
| Luminosity (bolometric) | 129,000+33,000 −24,000 L☉ |
| Surface gravity (log g) | −0.3 cgs |
| Temperature | 3,625 K |
| Other designations | |
| RT Car, HD 303310, HIP 52562, SAO 238424, CD−58°3538, AAVSO 1040-58 | |
| Database references | |
| SIMBAD | data |
RT Carinae, also known as CD−58 3538, is a red supergiant and a variable star, located 7,000 light years away in the constellation Carina. It is in the Carina Nebula. The apparent magnitude varying around +9 is too faint to be visible to the naked eye.