HD 222399
From Infogalactic: the planetary knowledge core
| Observation data Epoch J2000 Equinox J2000 |
|
|---|---|
| Constellation | Andromeda |
| Right ascension | 23h 40m 02.81727s[1] |
| Declination | +37° 39′ 09.5055″[1] |
| Apparent magnitude (V) | 6.57[2] |
| Characteristics | |
| Spectral type | F2IV[3] |
| U−B color index | +0.10[2] |
| B−V color index | +0.35[2] |
| Astrometry | |
| Radial velocity (Rv) | −21.0±0.6[4] km/s |
| Proper motion (μ) | RA: −7.88±0.41[1] mas/yr Dec.: −81.27±0.33[1] mas/yr |
| Parallax (π) | 11.01 ± 0.41[1] mas |
| Distance | 300 ± 10 ly (91 ± 3 pc) |
| Details | |
| Mass | 1.77[5] M☉ |
| Surface gravity (log g) | 3.78[5] cgs |
| Metallicity [Fe/H] | −0.04[5] dex |
| Rotational velocity (v sin i) | 55[6] km/s |
| Age | 1.4[5] Gyr |
| Other designations | |
| Database references | |
| SIMBAD | data |
| Database references | |
| SIMBAD | data |
HD 222399 is a double star in the northern constellation of Andromeda. The magnitude 6.57[2] primary is an F-type subgiant star with a stellar classification of F2IV.[3] It has a magnitude 10.57 companion at an angular separation of 14.7″ along a position angle of 162° (as of 2002).[7]
References
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