110 Virginis

110 Virginis is a star in the zodiac constellation Virgo, located 195^[1] light-years away from Earth. It is visible to the naked eye as an orange-hued star with an apparent visual magnitude of 4.40.^[2] The star is moving closer to the Earth with a heliocentric radial velocity of −16 km/s.^[1]

110 Virginis

Observation data Epoch J2000.0      Equinox J2000.0 (ICRS)
Constellation	Virgo
Right ascension	15h 02m 54.03756s[1]
Declination	+02° 05′ 28.6957″[1]
Apparent magnitude (V)	4.40[2]
Characteristics
Evolutionary stage	red clump[3]
Spectral type	K0.5 IIIb Fe–0.5[4]
B−V color index	1.04[2]
Astrometry
Radial velocity (Rv)	−16.2±0.3[1] km/s
Proper motion (μ)	RA: −55.569 mas/yr[1] Dec.: +13.628 mas/yr[1]
Parallax (π)	16.7474±0.129 mas[1]
Distance	195 ± 2 ly (59.7 ± 0.5 pc)
Details
Mass	1.67[2] M☉
Radius	13.78±0.14[5] R☉
Luminosity	80.4±1.8[5] L☉
Surface gravity (log g)	2.7[6] cgs
Temperature	4,655±24[5] K
Metallicity [Fe/H]	−0.3[6] dex
Age	4.52[2] Gyr
Other designations
110 Vir, BD+02°2905, FK5 3190, GC 20237, HD 133165, HIP 73620, HR 5601, SAO 120809[7]
Database references
SIMBAD	data

The stellar classification of 110 Virginis is K0.5 IIIb Fe–0.5,^[4] indicating that this is an evolved giant star with a mild underabundance of iron in its spectrum. At the age of 4.5^[2] billion years old, it belongs to a sub-category of giants called the red clump, which means it is on the horizontal branch and is generating energy through the helium fusion at its core.^[3] Compared to the Sun, it has 167%^[2] of the mass but has expanded to 14 times the size. The enlarged photosphere has an effective temperature of 4,655 K and is radiating 80 times the Sun's luminosity.^[5]