BP Boötis
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Boötes |
| Right ascension | 15h 42m 50.76018s |
| Declination | +52° 21′ 39.2521″ |
| Apparent magnitude (V) | 5.485 |
| Characteristics | |
| Spectral type | B9pSiCr[1] |
| U−B color index | -0.1 |
| B−V color index | -0.07 |
| Variable type | α² CVn |
| Astrometry | |
| Radial velocity (Rv) | -16.1 km/s |
| Parallax (π) | 10.92 ± 0.18 mas |
| Distance | 299 ± 5 ly (92 ± 2 pc) |
| Absolute magnitude (MV) | +0.48[2] |
| Details | |
| Mass | 2.58 ± 0.07[2] M☉ |
| Radius | 2.7 ± 0.2[2] R☉ |
| Luminosity | 65[2] L☉ |
| Surface gravity (log g) | 3.99 ± 0.07[2] cgs |
| Temperature | 9,954[2] K |
| Rotation | 1.29557 days[2] |
| Other designations | |
| Database references | |
| SIMBAD | data |
| Data sources: | |
| Hipparcos Catalogue, CCDM (2002), Bright Star Catalogue (5th rev. ed.) | |
BP Boötis is a Alpha² Canum Venaticorum variable star in the constellation Boötes. It varies by 0.02 magnitude over 1.3 days.[1]
References
- 1 2 Watson, Christopher (4 January 2010). "BP Boötis". AAVSO Website. American Association of Variable Star Observers. Retrieved 3 August 2014.
- 1 2 3 4 5 6 7 North, P. (June 1998), "Do SI stars undergo any rotational braking?", Astronomy and Astrophysics 334: 181–187, arXiv:astro-ph/9802286, Bibcode:1998A&A...334..181N
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