HD 37974
| Observation data Epoch J2000 Equinox J2000  | |
|---|---|
| Constellation | Dorado | 
| Right ascension | 05h 36m 25.843s | 
| Declination | –69° 22′ 55.90″ | 
| Apparent magnitude (V) | 10.95 | 
| Characteristics | |
| Spectral type | B0.5Ia+ | 
| U−B color index | −0.88 | 
| B−V color index | +0.15 | 
| Variable type | LBV? | 
| Astrometry | |
| Radial velocity (Rv) | 258 km/s | 
| Proper motion (μ) |  RA: -1.8 mas/yr  Dec.: -15.1 mas/yr  | 
| Parallax (π) | 0.22±0.42 mas | 
| Absolute magnitude (MV) | −8.4 | 
| Details | |
| Mass | 70 M☉ | 
| Radius | 78 R☉ | 
| Luminosity | 1,400,000 L☉ | 
| Temperature | 22,500 K | 
| Other designations | |
| RMC 126, R 126, HD 37974, GSC 09167-00518, AL 361, GV 408, MSX LMC 890, CPD-69°420, MWC 123, LHA 120-S 127, LI-LMC 1413, LMC V3566; 2MASS J05362586-6922558 | |
| Database references | |
| SIMBAD | data | 
HD 37974 (or R 126) a variable B[e] hypergiant in the Large Magellanic Cloud. It is surrounded by an unexpected dust disk.