49 Aurigae
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Auriga |
| Right ascension | 06h 30m 02.97400s |
| Declination | +46° 41′ 08.0041″ |
| Apparent magnitude (V) | 5.26 |
| Characteristics | |
| Evolutionary stage | main sequence |
| Spectral type | A0 Vnn |
| B−V color index | −0.008±0.006 |
| Astrometry | |
| Radial velocity (Rv) | +17.0±2.8 km/s |
| Proper motion (μ) | RA: −7.582 mas/yr Dec.: +7.854 mas/yr |
| Parallax (π) | 4.7747±0.0978 mas |
| Distance | 680 ± 10 ly (209 ± 4 pc) |
| Absolute magnitude (MV) | −0.01 |
| Details | |
| Mass | 2.50 M☉ |
| Radius | 4.2 R☉ |
| Luminosity | 143 L☉ |
| Surface gravity (log g) | 3.60 cgs |
| Temperature | 9,782 K |
| Rotational velocity (v sin i) | 149 km/s |
| Age | 281 Myr |
| Other designations | |
| 49 Aur, BD+28°1168, FK5 2504, HD 46553, HIP 31434, HR 2398, SAO 78524 | |
| Database references | |
| SIMBAD | data |
49 Aurigae is a single star located 680 light years away from the Sun in the northern constellation of Auriga. It is visible to the naked eye as a dim, white-hued star with an apparent visual magnitude of 5.26. The star is moving away from the Earth with a heliocentric radial velocity of +17 km/s, having come to within 149 ly some 5.5 million years ago. It is positioned near the ecliptic and thus is subject to lunar occultations.
This object is an A-type main-sequence star with a stellar classification of A0 Vnn, where the 'n' notation indicates "nebulous" lines due to rapid rotation. It is spinning with a projected rotational velocity of 149 km/s. This star has around 4.2 times the radius of the Sun and is radiating 143 times the Sun's luminosity from its photosphere at an effective temperature of 9,782 K.