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]
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] |
Distance | 134.5 ± 1.0 ly (41.2 ± 0.3 pc) |
Details | |
Mass | 2.58±0.02[6] M☉ |
Radius | 2.7[7] R☉ |
Luminosity | 62.8+1.8 −1.7[6] L☉ |
Surface gravity (log g) | 3.83±0.12[8] cgs |
Temperature | 9683+112 −111[6] K |
Metallicity [Fe/H] | −0.41±0.14[8] dex |
Rotational velocity (v sin i) | 285[6] km/s |
Age | 320[9] Myr |
Other designations | |
Database references | |
SIMBAD | data |
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]