89 Virginis
Single, evolved giant star in the constellation Virgo
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89 Virginis is a single[9] star in the zodiac constellation of Virgo, located 234 light years from the Sun. It is visible to the naked eye as a dim, orange-hued star with an apparent visual magnitude of 4.959.[2] The star is moving closer to the Earth with a heliocentric radial velocity of −39 km/s.[1]
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Virgo |
| Right ascension | 13h 49m 52.28340s[1] |
| Declination | −18° 08′ 03.0103″[1] |
| Apparent magnitude (V) | 4.959[2] |
| Characteristics | |
| Spectral type | K0III[3] |
| U−B color index | +0.86[4] |
| B−V color index | +1.06[4] |
| Astrometry | |
| Radial velocity (Rv) | −39.45±0.17[1] km/s |
| Proper motion (μ) | RA: −101.100[1] mas/yr Dec.: −38.200[1] mas/yr |
| Parallax (π) | 13.9184±0.2053 mas[1] |
| Distance | 234 ± 3 ly (72 ± 1 pc) |
| Absolute magnitude (MV) | 0.618[5] |
| Details | |
| Mass | 1.70[6] M☉ |
| Radius | 12[7] R☉ |
| Luminosity | 69[6] L☉ |
| Surface gravity (log g) | 2.6[7] cgs |
| Temperature | 4,706±13[6] K |
| Metallicity [Fe/H] | −0.03[7] dex |
| Age | 3.40[6] Gyr |
| Other designations | |
| 89 Vir, BD−17°3937, GJ 9460, HD 120452, HIP 67494, HR 5196, SAO 158186[8] | |
| Database references | |
| SIMBAD | data |
This is an evolved giant star with a stellar classification of K0 III,[3] having exhausted the hydrogen at its core and expanded away from the main sequence. It is a red clump star, which indicates it is generating energy through helium fusion at its core.[5] This object is 3.4 billion years old with 1.7[6] times the mass of the Sun and 12[7] times the Sun's radius. It is radiating 69 times the Sun's luminosity from its enlarged photosphere at an effective temperature of 4706 K.[6]