  | |
| Observation data Epoch J2000.0 Equinox J2000.0 | |
|---|---|
| Constellation | Carina |
| Right ascension | 09h 10m 58.086s[1] |
| Declination | −58° 58′ 0.82″[1] |
| Apparent magnitude (V) | +3.41 - 3.44[2] |
| Characteristics | |
| Spectral type | B2IV-V[3] |
| Variable type | Eclipsing[2] |
| Astrometry | |
| Radial velocity (Rv) | 23.3[4] km/s |
| Proper motion (μ) | RA: −16.64[1] mas/yr Dec.: 15.00 mas/yr |
| Parallax (π) | 7.30 ± 0.35 mas[1] |
| Distance | 450 ± 20 ly (137 ± 7 pc) |
| Orbit[5] | |
| Period (P) | 6.74469 d |
| Eccentricity (e) | 0.18 |
| Semi-amplitude (K1) (primary) | 21.5 km/s |
| Details | |
| Aa1 | |
| Mass | 9.15[6] M☉ |
| Radius | 5.0[7] R☉ |
| Surface gravity (log g) | 4.0[7] cgs |
| Temperature | 21,744[7] K |
| Age | 18.7[8] Myr |
| Aa2 | |
| Mass | 1.10[6] M☉ |
| Other designations | |
| Database references | |
| SIMBAD | data |
V357 Carinae (a Car, a Carinae)[n 1] is an astrometric and spectroscopic binary in the constellation Carina. It is approximately 419 light years from Earth. The mean apparent magnitude of the system is +3.43.
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