HD 221246
Appearance
Observation data Epoch J2000 Equinox J2000 | |
---|---|
Constellation | Andromeda |
Right ascension | 23h 30m 07.41387s[1] |
Declination | +49° 07′ 59.3190″[1] |
Apparent magnitude (V) | 6.17[2] |
Characteristics | |
Spectral type | K3III[3] |
U−B color index | 1.71[2] |
B−V color index | 1.46[2] |
Astrometry | |
Radial velocity (Rv) | +6.0[4] km/s |
Proper motion (μ) | RA: 28.94±0.32[1] mas/yr Dec.: 2.80±0.41[1] mas/yr |
Parallax (π) | 3.61 ± 0.50 mas[1] |
Distance | approx. 900 ly (approx. 280 pc) |
Details | |
Radius | 48[5] R☉ |
Other designations | |
Database references | |
SIMBAD | data |
HD 221246 or NGC 7686 1 is a giant star in open cluster NGC 7686, and it belongs to the northern constellation of Andromeda.
References
- ^ a b c d e 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
- ^ a b c Johnson, H. L.; et al. (1966), "UBVRIJKL photometry of the bright stars", Communications of the Lunar and Planetary Laboratory, 4 (99), Bibcode:1966CoLPL...4...99J
- ^ Wilson, R. E. (1953), General Catalogue of Stellar Radial Velocities, Carnegie Institute of Washington, D.C., Bibcode:1953GCRV..C......0W.
- ^ Pasinetti Fracassini, L. E.; et al. (2001), "Catalogue of Apparent Diameters and Absolute Radii of Stars (CADARS) - Third edition - Comments and statistics", Astronomy & Astrophysics, 367: 521–24, arXiv:astro-ph/0012289, Bibcode:2001A&A...367..521P, doi:10.1051/0004-6361:20000451