| Observation data Epoch J2000 Equinox J2000 |
|
|---|---|
| Constellation | Auriga |
| Right ascension | 05h 29m 42.6511s |
| Declination | +35° 22′ 30.089″ |
| Apparent magnitude (V) | 6.85 |
| Characteristics | |
| Spectral type | O9.5+O9.5eaII-III |
| B−V color index | -0.3 |
| Variable type | Beta Lyrae variable |
| Astrometry | |
| Radial velocity (Rv) | -29 km/s |
| Proper motion (μ) | RA: 0.72 mas/yr Dec.: -1.57 mas/yr |
| Parallax (π) | 1.78 ± 1.51 mas |
| Distance | approx. 2000 ly (approx. 600 pc) |
| Absolute magnitude (MV) | 6.96 |
| Details | |
| Mass | 64 M☉ |
| Radius | 16 R☉ |
| Luminosity | 1,400,000 L☉ |
| Temperature | 30,000–60,000 K |
| Other designations | |
| Database references | |
| SIMBAD | data |
| Data sources: | |
| Hipparcos Catalogue, CCDM (2002), Bright Star Catalogue (5th rev. ed.) |
|
LY Aurigae is an eclipsing binary hypergiant of Beta Lyr type in the constellation Auriga.