Psi³ Aurigae

Psi³ Aurigae, Latinized from ψ³ Aurigae, is a single,^[10] blue-white hued star in the northern constellation of Auriga. It is dimly visible to the naked eye with an apparent visual magnitude of +5.20.^[2] Based upon an annual parallax shift of 2.38 ± 0.39 mas as seen from the Earth,^[1] it is approximately 1,370 light-years (420 parsecs) distant from the Sun.

Psi³ Aurigae

Location of ψ3 Aurigae (circled)
Observation data Epoch J2000.0      Equinox J2000.0 (ICRS)
Constellation	Auriga
Right ascension	06h 38m 49.18001s[1]
Declination	+39° 54′ 09.2150″[1]
Apparent magnitude (V)	+5.20[2]
Characteristics
Spectral type	B8 III[3]
U−B color index	−0.38[4]
B−V color index	−0.07[4]
Astrometry
Radial velocity (Rv)	+9.0±4.2[5] km/s
Proper motion (μ)	RA: +27.19[1] mas/yr Dec.: +16.82[1] mas/yr
Parallax (π)	6.34 ± 0.20 mas[1]
Distance	510 ± 20 ly (158 ± 5 pc)
Absolute magnitude (MV)	−2.71[6]
Details
Radius	4.2[7] R☉
Luminosity	1,624[6] L☉
Temperature	13,361±83[8] K
Rotational velocity (v sin i)	118[8] km/s
Other designations
ψ3 Aur, 52 Aur, BD+40° 1665, HD 47100, HIP 31789, HR 2420, SAO 59319[9]
Database references
SIMBAD	data

This is a B-type giant star with a stellar classification of B8 III.^[3] It has about 4.2^[7] and is spinning with a relatively high projected rotational velocity of 118 km/s.^[8] The star is radiating 1,624^[6] times the Sun's luminosity from its photosphere at an effective temperature of 13,361 K.^[8]