HD 225218
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Andromeda |
| Right ascension | 00h 04m 36.587s[1] |
| Declination | +42° 05′ 33.11″[1] |
| Apparent magnitude (V) | 6.133 |
| Characteristics | |
| Spectral type | B9III |
| U−B color index | 0.14 |
| B−V color index | 0.15 |
| Astrometry | |
| Radial velocity (Rv) | -8 km/s |
| Proper motion (μ) | RA: -11.35 ± 0.42[1] mas/yr Dec.: -12.64 ± 0.36[1] mas/yr |
| Parallax (π) | 2.59 ± 0.56[1] mas |
| Distance | approx. 1,300 ly (approx. 390 pc) |
| Absolute magnitude (MV) | 6.272 |
| Details | |
| Mass | 18 M☉ |
| Radius | 7 R☉ |
| Luminosity | 20.000 L☉ |
| Temperature | 10.000–30.000 K |
| Other designations | |
| Database references | |
| SIMBAD | data |
| Database references | |
| SIMBAD | data |
HD 225218 or (ADS 30 A) is a double star system.
References
- ↑ 1.0 1.1 1.2 1.3 1.4 van Leeuwen, F. (2007). "Validation of the new Hipparcos reduction". Astronomy and Astrophysics 474 (2): 653–664. arXiv:0708.1752. Bibcode:2007A&A...474..653V. doi:10.1051/0004-6361:20078357.Vizier catalog entry
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