64 Aurigae

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]

64 Aurigae

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
64 Aur, BD+41°1630, FK5 276, HD 56221, HIP 35341, HR 2753, SAO 41679[6]
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).