Upsilon Virginis (υ Vir, υ Virginis) is a single[7] star in the zodiac constellation of Virgo. It has an apparent visual magnitude of 5.25,[2] making it faintly visible to the naked eye. According to the Bortle scale, it is visible from backlit suburban skies at night. Based upon a measured annual parallax shift of 12.1 mas, it is located roughly 269 light-years (82.6 parsecs) from the Sun. If the star were at a distance of 33 light-years (10 parsecs), it would have a magnitude of +0.4 and be the third-brightest star in the night sky.[3]

υ Virginis

Location of υ Virginis (circled)
Observation data Epoch J2000      Equinox J2000
Constellation	Virgo
Right ascension	14h 19m 32.47974s[1]
Declination	−02° 15′ 55.8587″[1]
Apparent magnitude (V)	5.27[2]
Characteristics
Evolutionary stage	giant[1]
Spectral type	G9 III[3]
U−B color index	+0.81[2]
B−V color index	1.023[4]
Astrometry
Radial velocity (Rv)	−26.68±0.16[4] km/s
Proper motion (μ)	RA: −118.809[1] mas/yr Dec.: −71.508[1] mas/yr
Parallax (π)	12.1137 ± 0.1301 mas[1]
Distance	269 ± 3 ly (82.6 ± 0.9 pc)
Absolute magnitude (MV)	0.4[3]
Details
Mass	1.72[5] M☉
Radius	12[4] R☉
Luminosity	64.6[4] L☉
Surface gravity (log g)	2.7[4] cgs
Temperature	4,753[4] K
Metallicity [Fe/H]	−0.22[4] dex
Rotational velocity (v sin i)	3.4[4] km/s
Age	377[1] Myr
Other designations
υ Vir, 102 Virginis, BD−01°2938, FK5 3134, HD 125454, HIP 70012, HR 5366, SAO 139866[6]
Database references
SIMBAD	data

This star has a stellar classification of G9 III,[3] which indicates it is an evolved G-type giant star. It has an estimated 172% of the Sun's mass and has expanded to 12 times the radius of the Sun, from which it is shining with 64.6 times the solar luminosity.[4] The effective temperature of the star's outer atmosphere is 4,753 K.[4] Based upon its motion through space, there is a 66% chance of being a member of the Hercules stream and a 27% chance it is a thin disk star.[8]

References