Xi Andromedae
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Andromeda |
| Right ascension | 01h 22m 20.42008s |
| Declination | +45° 31′ 43.5962″ |
| Apparent magnitude (V) | +4.90 |
| Characteristics | |
| Evolutionary stage | red clump |
| Spectral type | K0 IIIb |
| U−B color index | +0.98 |
| B−V color index | +1.08 |
| Astrometry | |
| Radial velocity (Rv) | −12.59 km/s |
| Proper motion (μ) | RA: +31.681(102) mas/yr Dec.: +9.024(88) mas/yr |
| Parallax (π) | 14.6042±0.1028 mas |
| Distance | 223 ± 2 ly (68.5 ± 0.5 pc) |
| Absolute magnitude (MV) | 0.550 |
| Details | |
| Mass | 2.5 M☉ |
| Radius | 10 R☉ |
| Luminosity | 45.7 L☉ |
| Surface gravity (log g) | 2.65±0.11 cgs |
| Temperature | 4,842±92 K |
| Metallicity [Fe/H] | +0.03 dex |
| Rotational velocity (v sin i) | 0.0 km/s |
| Age | 2.0+2.5 −1.1 Gyr |
| Other designations | |
| Adhil, ξ Andromedae, Xi And, ξ And, 46 Andromedae, BD+44 287, FK5 1035, HD 8207, HIP 6411, HR 390, SAO 37155, PPM 43919 | |
| Database references | |
| SIMBAD | data |
Xi Andromedae is a solitary star in the northern constellation of Andromeda. It has the proper name Adhil, pronounced /əˈdɪl/; the Bayer designation is Latinized from ξ Andromedae, abbreviated Xi And or ξ And, respectively. The star has an apparent magnitude of +4.9, which is bright enough to be faintly visible to the naked eye at night. Based on parallax measurements obtained during the Gaia mission, it lies at a distance of roughly 223 light-years (68 parsecs) from the Sun. It is drifting closer with a heliocentric radial velocity of –12.6 km/s.