49 Aurigae is a single[8] star located 680[1] light years away from the Sun in the northern constellation of Auriga.[7] It is visible to the naked eye as a dim, white-hued star with an apparent visual magnitude of 5.26.[2] 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.[2] It is positioned near the ecliptic and thus is subject to lunar occultations.[9][10]
Observation data Epoch J2000 Equinox J2000 | |
---|---|
Constellation | Auriga |
Right ascension | 06h 30m 02.97400s[1] |
Declination | +46° 41′ 08.0041″[1] |
Apparent magnitude (V) | 5.26[2] |
Characteristics | |
Evolutionary stage | main sequence |
Spectral type | A0 Vnn[3] |
B−V color index | −0.008±0.006[2] |
Astrometry | |
Radial velocity (Rv) | +17.0±2.8[2] km/s |
Proper motion (μ) | RA: −7.582[1] mas/yr Dec.: +7.854[1] mas/yr |
Parallax (π) | 4.7747 ± 0.0978 mas[1] |
Distance | 680 ± 10 ly (209 ± 4 pc) |
Absolute magnitude (MV) | −0.01[2] |
Details | |
Radius | 2.3[4] R☉ |
Luminosity | 3.28[2] L☉ |
Temperature | 8,794[5] K |
Rotational velocity (v sin i) | 149[6] km/s |
Other designations | |
Database references | |
SIMBAD | data |
This object is an A-type main-sequence star with a stellar classification of A0 Vnn,[3] where the 'n' notation indicates "nebulous" lines due to rapid rotation. It is spinning with a projected rotational velocity of 149 km/s.[6] This star has around 2.3[4] times the radius of the Sun and is radiating over three[2] times the Sun's luminosity from its photosphere at an effective temperature of 8,794 K.[5]