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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
SIMBAD data

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]

References

  1. ^ a b c d e f van Leeuwen, F. (2007), "Validation of the new Hipparcos reduction", Astronomy and Astrophysics, 474 (2): 653–664, arXiv: 0708.1752, Bibcode: 2007A&A...474..653V, doi: 10.1051/0004-6361:20078357, S2CID  18759600.
  2. ^ a b c d e Anderson, E.; Francis, Ch. (2012), "XHIP: An extended hipparcos compilation", Astronomy Letters, 38 (5): 331, arXiv: 1108.4971, Bibcode: 2012AstL...38..331A, doi: 10.1134/S1063773712050015, S2CID  119257644.
  3. ^ a b Gray, R. O.; et al. (July 2006), "Contributions to the Nearby Stars (NStars) Project: spectroscopy of stars earlier than M0 within 40 pc-The Southern Sample", The Astronomical Journal, 132 (1): 161–170, arXiv: astro-ph/0603770, Bibcode: 2006AJ....132..161G, doi: 10.1086/504637, S2CID  119476992.
  4. ^ a b De Bruijne, J. H. J.; Eilers, A.-C. (2012), "Radial velocities for the HIPPARCOS-Gaia Hundred-Thousand-Proper-Motion project", Astronomy & Astrophysics, 546: A61, arXiv: 1208.3048, Bibcode: 2012A&A...546A..61D, doi: 10.1051/0004-6361/201219219, S2CID  59451347.
  5. ^ a b c Paunzen, E.; et al. (July 2014), "Investigating the possible connection between λ Bootis stars and intermediate Population II type stars", Astronomy & Astrophysics, 567: 8, arXiv: 1406.3936, Bibcode: 2014A&A...567A..67P, doi: 10.1051/0004-6361/201423817, S2CID  56332289, A67.
  6. ^ a b c d David, Trevor J.; Hillenbrand, Lynne A. (2015), "The Ages of Early-Type Stars: Strömgren Photometric Methods Calibrated, Validated, Tested, and Applied to Hosts and Prospective Hosts of Directly Imaged Exoplanets", The Astrophysical Journal, 804 (2): 146, arXiv: 1501.03154, Bibcode: 2015ApJ...804..146D, doi: 10.1088/0004-637X/804/2/146, S2CID  33401607.
  7. ^ a b Pasinetti Fracassini, L. E.; et al. (February 2001), "Catalogue of Apparent Diameters and Absolute Radii of Stars (CADARS)", Astronomy and Astrophysics, 367 (2) (Third ed.): 521–524, arXiv: astro-ph/0012289, Bibcode: 2001A&A...367..521P, doi: 10.1051/0004-6361:20000451, S2CID  425754.
  8. ^ Prugniel, Ph.; et al. (July 2011), "The atmospheric parameters and spectral interpolator for the MILES stars", Astronomy & Astrophysics, 531: A165, arXiv: 1104.4952, Bibcode: 2011A&A...531A.165P, doi: 10.1051/0004-6361/201116769, S2CID  54940439.
  9. ^ "53 Vir". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2018-04-05.
  10. ^ a b Ammler-von Eiff, Matthias; Reiners, Ansgar (June 2012), "New measurements of rotation and differential rotation in A-F stars: are there two populations of differentially rotating stars?", Astronomy & Astrophysics, 542: A116, arXiv: 1204.2459, Bibcode: 2012A&A...542A.116A, doi: 10.1051/0004-6361/201118724, S2CID  53666672.
  11. ^ Wroblewski, H.; Torres, C. (March 1998), "New proper motion determination of Luyten catalogue stars (LTT) with declination between -5° and -30° and right ascension between 0h and 13h 30m", Astronomy and Astrophysics Supplement, 128: 457–458, Bibcode: 1998A&AS..128..457W, doi: 10.1051/aas:1998157
  12. ^ Malaroda, S. (August 1975), "Study of the F-type stars. I. MK spectral types", Astronomical Journal, 80: 637–641, Bibcode: 1975AJ.....80..637M, doi: 10.1086/111786.
  13. ^ Eggen, O. J. (1955), "The color-luminosity array for stars near the Sun", Astronomical Journal, 60: 401, Bibcode: 1955AJ.....60..401E, doi: 10.1086/107248
  14. ^ Mason, B. D.; et al. (2014), "The Washington Visual Double Star Catalog", The Astronomical Journal, 122 (6): 3466, Bibcode: 2001AJ....122.3466M, doi: 10.1086/323920.
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