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109 Virginis

109 Virginis
Observation data
Epoch J2000.0      Equinox J2000.0 (ICRS)
Constellation Virgo
Right ascension 14h 46m 14.92536s[1]
Declination +01° 53′ 34.3845″[1]
Apparent magnitude (V) +3.72[2]
Characteristics
Spectral type A0 V[3]
B−V color index −0.005±0.006[4]
Variable type None[5]
Astrometry
Radial velocity (Rv)−6.1±2.7[4] km/s
Proper motion (μ) RA: −114.03[1] mas/yr
Dec.: −22.13[1] mas/yr
Parallax (π)24.25 ± 0.18 mas[1]
Distance134.5 ± 1.0 ly
(41.2 ± 0.3 pc)
Details
Mass2.58±0.02[6] M☉
Radius2.7[7] R☉
Luminosity62.8+1.8
−1.7[6] L☉
Surface gravity (log g)3.83±0.12[8] cgs
Temperature9683+112
−111[6] K
Metallicity [Fe/H]−0.41±0.14[8] dex
Rotational velocity (v sin i)285[6] km/s
Age320[9] Myr
Other designations
109 Vir, BD+02°2862, FK5 547, HD 130109, HIP 72220, HR 5511, SAO 120648[10]
Database references
SIMBADdata
Chart of Virgo; 109 Virginis forms the Virgin's right foot.

109 Virginis is a single,[9] white-hued star in the zodiac constellation of Virgo, located some 134.5 light years away from the Sun. It is the seventh-brightest member of this constellation, having an apparent visual magnitude of +3.72.[2]

This is an A-type main-sequence star with a stellar classification of A0 V,[3] and is a suspected chemically peculiar star.[6][11] However, Abt and Morrell (1995) gave it a class of A0 IIInn,[12] matching a giant star with "nebulous" lines. It is spinning rapidly with a projected rotational velocity of 285 km/s,[6] which is giving the star an oblate shape with an equatorial bulge that is an estimated 31% larger than the polar radius.[13] The star is 320[9] million years old with 2.58[6] times the mass of the Sun and about 2.7[7] times the Sun's radius. It is radiating 63[6] times the Sun's luminosity from its photosphere at an effective temperature of 9,683 K.[6]

  1. ^ a b c d e Cite error: The named reference gaia_dr2 was invoked but never defined (see the help page).
  2. ^ a b Cite error: The named reference aass85_3_1015 was invoked but never defined (see the help page).
  3. ^ a b Cite error: The named reference Cowley1969 was invoked but never defined (see the help page).
  4. ^ a b Cite error: The named reference Anderson2012 was invoked but never defined (see the help page).
  5. ^ Cite error: The named reference Adelman1997 was invoked but never defined (see the help page).
  6. ^ a b c d e f g h i Cite error: The named reference Zorec2012 was invoked but never defined (see the help page).
  7. ^ a b Cite error: The named reference CADARS was invoked but never defined (see the help page).
  8. ^ a b Cite error: The named reference Wu2011 was invoked but never defined (see the help page).
  9. ^ a b c Cite error: The named reference DeRosa2014 was invoked but never defined (see the help page).
  10. ^ Cite error: The named reference SIMBAD was invoked but never defined (see the help page).
  11. ^ Cite error: The named reference Renson2009 was invoked but never defined (see the help page).
  12. ^ Cite error: The named reference abt1995 was invoked but never defined (see the help page).
  13. ^ Cite error: The named reference belle2012 was invoked but never defined (see the help page).

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