HD 220466
Star in the constellation Aquarius
From Wikipedia, the free encyclopedia
HD 220466 is an F-type main sequence star in the constellation Aquarius. It has apparent magnitude 6.5 and is about 212 light-years away.
| Observation data Epoch J2000.0 Equinox J2000.0 (ICRS) | |
|---|---|
| Constellation | Aquarius[1] |
| Right ascension | 23h 24m 03.97937s[2] |
| Declination | −21° 46′ 27.8824″[2] |
| Apparent magnitude (V) | 6.50[3] |
| Characteristics | |
| Evolutionary stage | main sequence[4][2] |
| Spectral type | F3IV/V[5] |
| U−B color index | −0.03[3] |
| B−V color index | +0.42[3] |
| Astrometry | |
| Radial velocity (Rv) | 24.5[6] km/s |
| Proper motion (μ) | RA: −68.050[2] mas/yr Dec.: −77.697[2] mas/yr |
| Parallax (π) | 15.3570±0.0292 mas[2] |
| Distance | 212.4 ± 0.4 ly (65.1 ± 0.1 pc) |
| Absolute magnitude (MV) | 2.50[7] |
| Details | |
| Mass | 1.4[8] M☉ |
| Radius | 2.3[8] R☉ |
| Luminosity | 8.8[8] L☉ |
| Surface gravity (log g) | 3.86[8] cgs |
| Temperature | 6,580[8] K |
| Metallicity [Fe/H] | −0.18[7] dex |
| Age | 2.0[7] Gyr |
| Other designations | |
| BD−22°6119, HD 220466, HIP 115522, SAO 191873 | |
| Database references | |
| SIMBAD | data |
In 1913, an apparent visual companion of apparent magnitude 10.3 was observed 1.9 arcseconds away from the star,[9] but it is doubtful whether it exists.[10]
The 17th-magnitude red dwarf UCAC4 342-200228 18″ away from HD 220466 forms a common proper motion pairing.[4][11] Any orbit would take tens of thousands of years.[11]