Xi Virginis
Star in the constellation Virgo
From Wikipedia, the free encyclopedia
Xi Virginis (ξ Vir, ξ Virginis) is a solitary[11] star in the zodiac constellation of Virgo. It is bright enough to be seen with the naked eye, having an apparent visual magnitude of 4.83.[2] The distance to this star is about 122 light years, as determined from parallax readings.[1]
 | |
| Observation data Epoch J2000.0 Equinox J2000.0 | |
|---|---|
| Constellation | Virgo |
| Right ascension | 11h 45m 17.04027s[1] |
| Declination | +08° 15′ 29.2150″[1] |
| Apparent magnitude (V) | 4.83[2] |
| Characteristics | |
| Spectral type | A4 V[3] |
| U−B color index | +0.10[2] |
| B−V color index | +0.17[2] |
| Astrometry | |
| Radial velocity (Rv) | −0.5[4] km/s |
| Proper motion (μ) | RA: +60.08[1] mas/yr Dec.: −24.50[1] mas/yr |
| Parallax (π) | 26.73±0.25 mas[1] |
| Distance | 122 ± 1 ly (37.4 ± 0.3 pc) |
| Absolute magnitude (MV) | +1.98[5] |
| Details | |
| Mass | 1.93[6] M☉ |
| Radius | 1.5[7] R☉ |
| Luminosity | 12.6[8] L☉ |
| Surface gravity (log g) | 4.31[6] cgs |
| Temperature | 8,172[8] K |
| Rotational velocity (v sin i) | 130[3] km/s |
| Age | 480[9] Myr |
| Other designations | |
| 2 Virginis, ξ Vir, BD+09°2545, HD 102124, HIP 57328, HR 4515, SAO 119029[10] | |
| Database references | |
| SIMBAD | data |
Xi Virginis is an A-type main sequence star with a stellar classification of A4 V.[3] It has an estimated age of 480[9] million years and is spinning rapidly with a projected rotational velocity of 130 km/s.[3] It has about 150%[7] the Sun's radius and shines with 12.6[8] times the luminosity of the Sun.