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53 Virginis

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]
Distance111 ± 1 ly
(33.9 ± 0.3 pc)
Absolute magnitude (MV)2.46±0.03[5]
Details[6]
Mass1.21 M☉
Radius3.0[7] R☉
Luminosity9.45[2] L☉
Surface gravity (log g)3.85±0.14 cgs
Temperature6,346±216 K
Metallicity [Fe/H]−0.04±0.04[8] dex
Rotational velocity (v sin i)13.5±0.6[5] km/s
Age2.923 Gyr
Other designations
53 Vir, NSV 6136, BD−15° 3613, HD 114642, HIP 64407, HR 4981, SAO 157788, WDS J13121-1612A[9]
Database references
SIMBADdata

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]

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]

  1. ^ a b c d e f Cite error: The named reference vanLeeuwen2007 was invoked but never defined (see the help page).
  2. ^ a b c d e Cite error: The named reference Anderson2012 was invoked but never defined (see the help page).
  3. ^ a b Cite error: The named reference Gray2006 was invoked but never defined (see the help page).
  4. ^ a b Cite error: The named reference DeBruijne2012 was invoked but never defined (see the help page).
  5. ^ a b c Cite error: The named reference Paunzen2014 was invoked but never defined (see the help page).
  6. ^ a b c d Cite error: The named reference David2015 was invoked but never defined (see the help page).
  7. ^ a b Cite error: The named reference cadars2001 was invoked but never defined (see the help page).
  8. ^ Cite error: The named reference Prugniel2011 was invoked but never defined (see the help page).
  9. ^ Cite error: The named reference SIMBAD was invoked but never defined (see the help page).
  10. ^ a b Cite error: The named reference VonEiff2012 was invoked but never defined (see the help page).
  11. ^ Cite error: The named reference Wroblewski1998 was invoked but never defined (see the help page).
  12. ^ Cite error: The named reference Malaroda1975 was invoked but never defined (see the help page).
  13. ^ Cite error: The named reference Eggen1955 was invoked but never defined (see the help page).
  14. ^ Cite error: The named reference WDSC2014 was invoked but never defined (see the help page).

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