LH 54-425
LH 54-425 is the bright star on the left. NGC 1955 is the cluster in the middle, dominated by the B0 supergiant HD 269925. The bright star on the right is the Wolf–Rayet/O-supergiant binary HD 36402. | |
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Dorado |
| Right ascension | 05h 26m 24.2505s |
| Declination | −67° 30′ 17.194″ |
| Apparent magnitude (V) | 13.13 |
| Characteristics | |
| Spectral type | O3V + O5V |
| U−B color index | +0.01 |
| B−V color index | −0.31 |
| Orbit | |
| Period (P) | 2.2474 days |
| Semi-major axis (a) | 30.4 R☉ |
| Eccentricity (e) | 0 |
| Inclination (i) | 55° |
| Semi-amplitude (K1) (primary) | 201.6 km/s |
| Semi-amplitude (K2) (secondary) | 359.1 km/s |
| Details | |
| O3 | |
| Mass | 47 M☉ |
| Radius | 11.4 R☉ |
| Luminosity | 500,000 L☉ |
| Surface gravity (log g) | 4.00 cgs |
| Temperature | 45,000 K |
| Rotational velocity (v sin i) | 197 km/s |
| O5 | |
| Mass | 28 M☉ |
| Radius | 8.1 R☉ |
| Luminosity | 160,000 L☉ |
| Surface gravity (log g) | 4.07 cgs |
| Temperature | 41,000 K |
| Rotational velocity (v sin i) | 182 km/s |
| Age | 2.0 Myr |
| Database references | |
| SIMBAD | data |
LH 54-425 is a spectroscopic binary star system in the LH 54 OB association within the Large Magellanic Cloud in the constellation Dorado.