HD 223229
Suspected variable star in the constellation Andromeda
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HD 223229 is a suspected variable star in the northern constellation of Andromeda. It is a double star consisting of a magnitude 6.11 primary and a magnitude 8.73 companion. The pair have an angular separation of 0.80″ along a position angle of 250°, as of 2009.[9] The primary is a B-type subgiant star with a stellar classification of B3IV.[4] It has an estimated 6.3 times the mass of the Sun, with an effective temperature of 17,900 K.[6]
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Andromeda[1] |
| Right ascension | 23h 47m 33.04919s[2] |
| Declination | +46° 49′ 57.2217″[2] |
| Apparent magnitude (V) | 6.07[3] |
| Characteristics | |
| Spectral type | B3IV[4] |
| U−B color index | −0.66[3] |
| B−V color index | −0.14[3] |
| Astrometry | |
| Radial velocity (Rv) | −9.3±2.2[5] km/s |
| Proper motion (μ) | RA: 0.708±0.059[2] mas/yr Dec.: −5.845±0.050[2] mas/yr |
| Parallax (π) | 1.9698±0.0761 mas[2] |
| Distance | 1,660 ± 60 ly (510 ± 20 pc) |
| Absolute magnitude (MV) | −1.36[1] |
| Details | |
| Mass | 6.31±0.49[6] M☉ |
| Luminosity (bolometric) | 1,762[6] L☉ |
| Temperature | 17,900[6] K |
| Rotational velocity (v sin i) | 30[7] km/s |
| Age | 36.8±3.0[8] Myr |
| Other designations | |
| BD+46°416, HD 223229, HIP 117340, HR 9011, SAO 53374 | |
| Database references | |
| SIMBAD | data |
