53 Virginis

53 Virginis is a single,^[10] yellow-white hued star in the zodiac constellation of Virgo. It is faintly visible to the naked eye, having an apparent visual magnitude of 5.04.^[2] Based upon an annual parallax shift of 29.49±0.29 mas,^[1] it is located 111 light years away. The star is moving closer to the Sun with a heliocentric radial velocity of −12.7 km/s.^[4] It has a relatively high rate of proper motion, traversing the celestial sphere at the rate of 284±18 mas/yr along a position angle of 162.2°.^[11]

53 Virginis

Observation data Epoch J2000      Equinox J2000
Constellation	Virgo
Right ascension	13h 12m 03.54378s[1]
Declination	−16° 11′ 54.9682″[1]
Apparent magnitude (V)	5.04[2]
Characteristics
Spectral type	F5.5 V[3]
B−V color index	0.46[2]
Astrometry
Radial velocity (Rv)	−12.7±0.2[4] km/s
Proper motion (μ)	RA: +97.32[1] mas/yr Dec.: −287.65[1] mas/yr
Parallax (π)	29.49±0.29 mas[1]
Distance	111 ± 1 ly (33.9 ± 0.3 pc)
Absolute magnitude (MV)	2.46±0.03[5]
Details[6]
Mass	1.21 M☉
Radius	3.0[7] R☉
Luminosity	9.45[2] L☉
Surface gravity (log g)	3.85±0.14 cgs
Temperature	6,346±216 K
Metallicity [Fe/H]	−0.04±0.04[8] dex
Rotational velocity (v sin i)	13.5±0.6[5] km/s
Age	2.923 Gyr
Other designations
53 Vir, NSV 6136, BD−15° 3613, HD 114642, HIP 64407, HR 4981, SAO 157788, WDS J13121-1612A[9]
Database references
SIMBAD	data

Gray et al. (2006) assigned this star a stellar classification of F5.5 V,^[3] matching an ordinary F-type main-sequence star. Older studies, such as Malaroda (1975)^[12] or Eggen (1955),^[13] listed a class of F5 III-IV or F6 III-IV, suggesting a more evolved condition. It is spinning with a projected rotational velocity of 13.5^[5] km/s and appears to be undergoing differential rotation.^[10] The star is nearly three^[6] billion years old, with 1.21^[6] times the mass of the Sun and about three times the Sun's radius.^[7] It is radiating over nine^[2] times the Sun's luminosity from its photosphere at an effective temperature of around 6,346 K.^[6]

The star has three visual companions, the nearest being a magnitude 12.5 star located at an angular separation of 104.10″ along a position angle of 1°, as of 2000.^[14]