OU Andromedae
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Andromeda |
| Right ascension | 23h 49m 40.961s[1] |
| Declination | +36° 25′ 31.01″[1] |
| Apparent magnitude (V) | 5.87 - 5.94[2] |
| Characteristics | |
| Spectral type | G1IIIe |
| B−V color index | 0.79 |
| Variable type | FK Com[2] |
| Astrometry | |
| Radial velocity (Rv) | 0.7 km/s |
| Proper motion (μ) | RA: 1.01 ± 0.41[1] mas/yr Dec.: -47.59 ± 0.26[1] mas/yr |
| Parallax (π) | 7.71 ± 0.34 mas[1] |
| Distance | 420 ± 20 ly (130 ± 6 pc) |
| Details | |
| Mass | 2.9[3] M☉ |
| Other designations | |
| Database references | |
| SIMBAD | data |
OU Andromedae is a rotationally variable star. It has an X-ray emission of 8.2 × 1030 erg s−1.[3] Varying between magnitudes 5.87 and 5.94, it has been classified as an FK Comae Berenices variable.
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.Vizier catalog entry
- ^ a b Samus, N. N.; Durlevich, O. V.; et al. (2009). "VizieR Online Data Catalog: General Catalogue of Variable Stars (Samus+ 2007-2013)". VizieR On-line Data Catalog: B/gcvs. Originally published in: 2009yCat....102025S. 1. Bibcode:2009yCat....102025S.
- ^ a b Gondoin, P. (December 1999), "Evolution of X-ray activity and rotation on G-K giants", Astronomy and Astrophysics, 352: 217–227, Bibcode:1999A&A...352..217G
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