| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Virgo |
| Right ascension | 13h12m 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 |
53 Virginis is a single,[10] yellow-white hued star in the zodiac constellationofVirgo. It is faintly visible to the naked eye, having an apparent visual magnitude of 5.04.[2] Based upon an annual parallax shiftof29.49±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]
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 separationof104.10″ along a position angle of 1°, as of 2000.[14]
