64 Aurigae is a single[7] star located 312[1] light years away from the Sun in the northern constellation of Auriga.[6] It is visible to the naked eye as a dim, white-hued star with an apparent magnitude of 5.87.[2] The star is moving closer to the Earth with a heliocentric radial velocity of −10, and may come to within 167 light-years in around 5.3 million years.[2] It is a member of the Sirius supercluster.[8]
Observation data Epoch J2000 Equinox J2000 | |
---|---|
Constellation | Auriga |
Right ascension | 07h 18m 02.21420s[1] |
Declination | +40° 53′ 00.2248″[1] |
Apparent magnitude (V) | 5.87[2] |
Characteristics | |
Evolutionary stage | main sequence[3] |
Spectral type | A5 Vn[4] |
B−V color index | 0.181±0.005 |
Astrometry | |
Radial velocity (Rv) | −10.0±4.3[2] km/s |
Proper motion (μ) | RA: −12.784[1] mas/yr Dec.: +12.065[1] mas/yr |
Parallax (π) | 10.4466 ± 0.1116 mas[1] |
Distance | 312 ± 3 ly (96 ± 1 pc) |
Absolute magnitude (MV) | 1.22[2] |
Details | |
Mass | 1.67[5] M☉ |
Luminosity | 27.03[2] L☉ |
Surface gravity (log g) | 3.88[5] cgs |
Temperature | 8,014±272[5] K |
Rotational velocity (v sin i) | 212[3] km/s |
Age | 291[5] Myr |
Other designations | |
Database references | |
SIMBAD | data |
This object is an ordinary A-type main-sequence star with a stellar classification of 5 Vn,[4] where the 'n' notation is used to indicate "nebulous" lines in the spectrum caused by rapid rotation. It is 291[5] million years old with a projected rotational velocity of 212 km/s.[3] The star has 1.67[5] times the mass of the Sun and is radiating 27[2] times the Sun's luminosity from its photosphere at an effective temperature of 8,014 K.[5]
It was also known to be part of a much bigger constellation named Telescopium Herschelii before it was unrecognized by the International Astronomical Union (IAU).