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HD 222399
 | The topic of this article may not meet Wikipedia's notability guideline for astronomical objects. (July 2020) |
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Andromeda |
| Right ascension | 23h 40m 02.8166s[1] |
| Declination | +37° 39′ 09.5064″[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: −8.490±0.042[1] mas/yr Dec.: −81.051±0.037[1] mas/yr |
| Parallax (π) | 10.7133 ± 0.0351 mas[1] |
| Distance | 304.4 ± 1.0 ly (93.3 ± 0.3 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]
- ^ a b c d e Brown, A. G. A.; et al. (Gaia collaboration) (August 2018). "Gaia Data Release 2: Summary of the contents and survey properties". Astronomy & Astrophysics. 616. A1. arXiv:1804.09365. Bibcode:2018A&A...616A...1G. doi:10.1051/0004-6361/201833051. Gaia DR2 record for this source at VizieR.
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