9 Cephei
| Observation data Epoch J2000.0 Equinox J2000.0 | |
|---|---|
| Constellation | Cepheus |
| Right ascension | 21h 37m 55.22469s[1] |
| Declination | +62° 04′ 54.9825″[1] |
| Apparent magnitude (V) | 4.69 - 4.78 |
| Characteristics | |
| Spectral type | B2Ib |
| Variable type | Alpha Cygni |
| Astrometry | |
| Radial velocity (Rv) | −13.50 ± 0.8 km/s |
| Proper motion (μ) | RA: −1.64 ± 0.17[1] mas/yr Dec.: −3.02 ± 0.16[1] mas/yr |
| Details | |
| Other designations | |
| Database references | |
| SIMBAD | data |
9 Cephei (9 Cep), also known as V337 Cephei, is a star in the constellation Cepheus. Its apparent magnitude is 4.79.
References
- 1 2 3 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
| ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
This article is issued from Wikipedia - version of the Tuesday, March 01, 2016. The text is available under the Creative Commons Attribution/Share Alike but additional terms may apply for the media files.