59 Virginis

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This article is about e Virginis. It is not to be confused with ε Virginis.

Coordinates: Sky map 13h 16m 46.51596s, +09° 25′ 26.9590″

59 Virginis
Observation data
Epoch J2000      Equinox J2000
Constellation Virgo
Right ascension 13h 16m 46.51616s[1]
Declination 09° 25′ 26.9672″[1]
Characteristics
Spectral type G0V[2]
Apparent magnitude (B) 5.81
Apparent magnitude (V) 5.22
Apparent magnitude (R) 4.8
Apparent magnitude (I) 4.5
Apparent magnitude (J) 4.392 ± 0.284
Apparent magnitude (H) 4.107 ± 0.208
Apparent magnitude (K) 4.033 ± 0.238
Astrometry
Radial velocity (Rv)−25.9 ± 0.9 km/s
Proper motion (μ) RA: −336.665[3] mas/yr
Dec.: 190.579±0.420[3] mas/yr
Parallax (π)57.0186 ± 0.2525[3] mas
Distance57.2 ± 0.3 ly
(17.54 ± 0.08 pc)
Absolute magnitude (MV)4.08±0.010[4]
Details
Mass1.16 ± 0.05[5] M☉
Radius1.36 ± 0.04[5] R☉
Luminosity (bolometric)2.15 ± 0.15[2] L☉
Surface gravity (log g)4.37[4] cgs
Temperature6,205 ± 20[6] K
Metallicity [Fe/H]0.21[4] dex
Rotation3.329 days[2]
Age(various estimates, see text) Myr
Other designations
e Vir (e Virginis), BD+10 2531, 59 Vir (59 Virginis), GJ (Gliese, Gl) 504, HD 115383, HIP 64792, HR 5011, SAO 119847, WDS J13168+0925A
Database references
SIMBADdata
ARICNSdata
Extrasolar Planets
Encyclopaedia		data

59 Virginis (e Virginis, HR 5011, Gliese 504) is a G-type main-sequence star, located in constellation Virgo at approximately 57 light-years from Earth.

History of observations[]

59 Virginis is known to astronomers at least from 1598, when it was catalogued by Tycho Brahe in his manuscript catalogue of 1004 fixed stars. Brahe designated it as "Parvula sequens vindemiatricem", which means in Latin "A tiny following Vindemiatrix" (that is Epsilon Virginis), and assigned it a visual magnitude 6[7][8] (a modern value of its apparent magnitude (in band V) is 5.22). Five years later in 1603 Johann Bayer pictured it on constellation Virgo folio of his celestial atlas "Uranometria" and designated it with number 37, letter "e" (hence its Bayer designation e Virginis, or e Vir) and name "Alæ dextræ sequens", which means in Latin "Following right wing". Bayer also assigned it a visual magnitude 6.[9]

Four hundred fifteen years later in 2013 July Kuzuhara et al. announced discovery of orbiting this star planet b. The discovery was made using 8.2-meter Subaru Telescope of Mauna Kea Observatory, Hawaii.

Distance[]

59 Virginis distance estimates

Source Parallax, mas Distance, pc Distance, ly Ref.
Gliese & Jahreiss (1991) 74.2 ± 9.0 13.5+1.9
−1.5		 44.0+6.1
−4.8		 GJ
van Altena et al. (1995) 63.0 ± 7.5 15.9+2.1
−1.7		 51.8+7.0
−5.5		 GCTP (YPC)
Perryman et al. (1997) 55.71 ± 0.85 17.95 ± 0.27 58.5 ± 0.9 (Hipparcos)
van Leeuwen (2007) 56.95 ± 0.26 17.56 ± 0.08 57.27 ± 0.26 (Hipparcos)
Gaia Data Release 2 57.0186 ± 0.2524 17.54 ± 0.08 57.2 ± 0.3 (Gaia)

The best estimate is marked in bold.

Age and other characteristics[]

The star is a young Sun-like star of spectral type G0V and effective temperature 6205 ± 20 K[6] (not much hotter than the Sun). It is also twice brighter than the Sun, its log (L/L⊙) is 0.332 ± 0.032. Its rotation period is 3.329 days.[2]

Age of the star was estimated as 0.16+0.35
−0.60 Gyr (2013),[2] 4.5+2.0
−1.5 Gyr (2015),[5] and 2.5+1.0
−0.7 Gyr (2017).[6]

Exoplanet[]

In 2013, the discovery of a Jovian planet, b, by direct imaging of the system was announced.[2] A later re-analysis suggested that it may actually be a brown dwarf.[6]

References[]

  1. ^ a b Brown, A. G. A.; et al. (Gaia collaboration) (August 2018). "Gaia Data Release 2: Summary of the contents and survey properties". Astronomy & Astrophysics. 616. A1. arXiv:1804.09365. Bibcode:2018A&A...616A...1G. doi:10.1051/0004-6361/201833051.
  2. ^ a b c d e f Kuzuhara, M.; et al. (2013). "Direct Imaging of a Cold Jovian Exoplanet in Orbit around the Sun-like Star GJ 504". The Astrophysical Journal. 774 (1). 11. arXiv:1307.2886. Bibcode:2013ApJ...774...11K. doi:10.1088/0004-637X/774/1/11. S2CID 53343537.
  3. ^ a b c Brown, A. G. A.; et al. (Gaia collaboration) (August 2018). "Gaia Data Release 2: Summary of the contents and survey properties". Astronomy & Astrophysics. 616. A1. arXiv:1804.09365. Bibcode:2018A&A...616A...1G. doi:10.1051/0004-6361/201833051. Gaia DR2 record for this source at VizieR.
  4. ^ a b c Park, Sunkyung; et al. (2013). "Wilson-Bappu Effect: Extended to Surface Gravity". The Astronomical Journal. 146 (4): 73. arXiv:1307.0592. Bibcode:2013AJ....146...73P. doi:10.1088/0004-6256/146/4/73. S2CID 119187733.
  5. ^ a b c Fuhrmann, K.; Chini, R. (2015). "On the age of Gliese 504". The Astrophysical Journal. 806 (2): 163. Bibcode:2015ApJ...806..163F. doi:10.1088/0004-637X/806/2/163.
  6. ^ a b c d D'Orazi, V.; Desidera, S.; Gratton, R. G.; et al. (2017). "A critical reassessment of the fundamental properties of GJ 504: chemical composition and age". Astronomy & Astrophysics. 598: A19. arXiv:1609.02530. Bibcode:2017A&A...598A..19D. doi:10.1051/0004-6361/201629283. S2CID 54515711.
  7. ^ Baily, Francis (1843). "The Catalogues of Ptolemy, Ulugh Beigh, Tycho Brahe, Halley, Hevelius, Deduced from the Best Authorities. With Various Notes and Corrections, and a Preface to Each Catalogue. To Which is Added the Synonym of each Star, in the Catalogues of Flamsteed of Lacaille, as far as the same can be ascertained". Memoirs of the Royal Astronomical Society. 13: 1. Bibcode:1843MmRAS..13....1B. (e Virginis: for Tycho Brahe's catalogue see page 149, for Hevelius' – page 235).
  8. ^ Verbunt, F.; van Gent, R. H. (2010). "Three editions of the star catalogue of Tycho Brahe. Machine-readable versions and comparison with the modern Hipparcos Catalogue". Astronomy & Astrophysics. 516: A28. arXiv:1003.3836. Bibcode:2010A&A...516A..28V. doi:10.1051/0004-6361/201014002. S2CID 54025412.
  9. ^ Bayer, Johann (1603). "Uranometria: omnium asterismorum continens schemata, nova methodo delineata, aereis laminis expressa". Uranometria in Linda Hall Library: link. Pages on constellation Virgo: Table, Map.

External links[]

Coordinates: Sky map 13h 16m 46.51596s, +09° 25′ 26.9590″

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