WOH G64
| Observation data Epoch J2000.0 Equinox J2000.0 | |
|---|---|
| Constellation | Dorado |
| Right ascension | 04h 55m 10.5252s |
| Declination | −68° 20′ 29.998″ |
| Apparent magnitude (V) | 17.7 - 18.8 |
| Characteristics | |
| A | |
| Evolutionary stage | Yellow hypergiant |
| Apparent magnitude (K) | 6.849 |
| Apparent magnitude (R) | 15.69 |
| Apparent magnitude (G) | 15.0971 |
| Apparent magnitude (I) | 12.795 |
| Apparent magnitude (J) | 9.252 |
| Apparent magnitude (H) | 7.745 |
| Variable type | Slow irregular variable + symbiotic |
| B | |
| Spectral type | B |
| Astrometry | |
| Radial velocity (Rv) | 285±2 km/s |
| Proper motion (μ) | RA: 1.689 mas/yr Dec.: −0.013 mas/yr |
| Distance | 160,000 ly (50,000 pc) |
| Absolute magnitude (MV) | −6.00 |
| Details | |
| A | |
| Mass | 28 (initial mass) M☉ |
| Radius | ~800 R☉ |
| Surface gravity (log g) | 0.0 cgs |
| Temperature | 4,700 K |
| Age | ≤5 Myr |
| Other designations | |
| WOH G064, 2MASS J04551048-6820298, IRAS 04553-6825, MSX LMC 1182 | |
| Database references | |
| SIMBAD | data |
WOH G64 (IRAS 04553-6825) is a symbiotic binary in the Large Magellanic Cloud (LMC), roughly 160,000 light-years from Earth. The main component of this system was once recognized as the best candidate for the largest known star when it was a red supergiant, until it gradually became a yellow hypergiant with half of its original size. The secondary is a B-type star. This system also exhibits features of B(e) stars.
WOH G64 is surrounded by an optically thick dust envelope of roughly a light year in diameter, containing 3 to 9 times the Sun's mass of expelled material that was created by the strong stellar wind.