OP Andromedae
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Andromeda |
| Right ascension | 01h 36m 27.19997s[1] |
| Declination | +48° 43′ 22.0010″[1] |
| Apparent magnitude (V) | 6.27 - 6.41[2] |
| Characteristics | |
| Spectral type | K1III |
| B−V color index | 1.21 |
| Variable type | RS Canum Venaticorum variable |
| Astrometry | |
| Radial velocity (Rv) | -42.67 ± 0.14 km/s |
| Proper motion (μ) | RA: -16.08 ± 0.39[1] mas/yr Dec.: -17.81 ± 0.37[1] mas/yr |
| Parallax (π) | 6.36 ± 0.41[1] mas |
| Distance | 510 ± 30 ly (160 ± 10 pc) |
| Absolute magnitude (MV) | 0.37 ± 0.23[3] |
| Details | |
| Radius | 16.1 ± 2.2[3] R☉ |
| Luminosity | 87 ± 20[3] L☉ |
| Temperature | 4400 [3] K |
| Other designations | |
| Database references | |
| SIMBAD | data |
OP Andromedae is a star in the constellation Andromeda. Varying between magnitudes 6.27 and 6.41 over 2.35 days, it has been classified as an RS Canum Venaticorum variable.[2] Unusually high levels of lithium have been detected in its spectrum.[3]
References
- 1 2 3 4 5 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
- 1 2 Watson, Christopher (4 January 2010). "OP Andromedae". AAVSO Website. American Association of Variable Star Observers. Retrieved 17 July 2015.
- 1 2 3 4 5 Balachandran, Suchitra C.; Fekel, Francis C.; Henry, Gregory W.; Uitenbroek, Han (2000). "Two K Giants with Supermeteoritic Lithium Abundances: HDE 233517 and HD 9746". The Astrophysical Journal 542 (2): 978–88. Bibcode:2000ApJ...542..978B. doi:10.1086/317055.
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