16 Cephei
Observation data Epoch J2000 Equinox J2000 | |
---|---|
Constellation | Cepheus |
Right ascension | 21h 59m 14.96555s[1] |
Declination | +73° 10′ 47.6212″[1] |
Apparent magnitude (V) | 5.036[2] |
Characteristics | |
Spectral type | F5V[3] |
B−V color index | 0.41[4] |
Astrometry | |
Radial velocity (Rv) | ±0.4 −20.6[5] km/s |
Proper motion (μ) | RA: ±0.16 −68.62[1] mas/yr Dec.: ±0.16 −160.18[1] mas/yr |
Parallax (π) | 27.23 ± 0.17[1] mas |
Distance | 119.8 ± 0.7 ly (36.7 ± 0.2 pc) |
Absolute magnitude (MV) | 2.17[6] |
Details | |
Surface gravity (log g) | 3.87[4] cgs |
Temperature | 6,238[4] K |
Metallicity | −0.36[6] |
Rotational velocity (v sin i) | 26.4[4] km/s |
Other designations | |
Database references | |
SIMBAD | data |
16 Cephei is a double star, about 120 light years from the Sun, in the constellation of Cepheus. It is composed of two stars of spectral type F5V,[8] which might be an optical double system.[9]
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
- ↑ Høg, E.; Fabricius, C.; Makarov, V. V.; Urban, S.; Corbin, T.; Wycoff, G.; Bastian, U.; Schwekendiek, P.; Wicenec, A. (2000). "The Tycho-2 catalogue of the 2.5 million brightest stars". Astronomy and Astrophysics. 355: L27. Bibcode:2000A&A...355L..27H.
- ↑ Eggen, O. J. (1962), "Space-velocity vectors for 3483 stars with proper motion and radial velocity", Royal Observatory Bulletin, 51, Bibcode:1962RGOB...51...79E.
- 1 2 3 4 Schröder, C.; Reiners, A.; Schmitt, J. H. M. M.- (January 2009), "Ca II HK emission in rapidly rotating stars. Evidence for an onset of the solar-type dynamo", Astronomy and Astrophysics, 493 (3): 1099–1107, Bibcode:2009A&A...493.1099S, doi:10.1051/0004-6361:200810377
- ↑ Gontcharov, G. A. (November 2006), "Pulkovo Compilation of Radial Velocities for 35495 Hipparcos stars in a common system", Astronomy Letters, 32 (11): 759–771, arXiv:1606.08053, Bibcode:2006AstL...32..759G, doi:10.1134/S1063773706110065.
- 1 2 Griffin, R. F.; Suchkov, A. A. (2003). "The Nature of Overluminous F Stars Observed in a Radial-Velocity Survey". The Astrophysical Journal Supplement Series. 147 (1): 103–44. Bibcode:2003ApJS..147..103G. doi:10.1086/367855.
- ↑ "16 Cep". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2018-01-27.
- ↑ Pasinetti Fracassini, L. E.; Pastori, L.; Covino, S.; Pozzi, A. (February 2001). "Catalogue of Apparent Diameters and Absolute Radii of Stars (CADARS) - Third edition - Comments and statistics". Astronomy and Astrophysics. 367: 521–524. arXiv:astro-ph/0012289. Bibcode:2001A&A...367..521P. doi:10.1051/0004-6361:20000451.
- ↑ Eggleton, P. P.; Tokovinin, A. A. (2008). "A catalogue of multiplicity among bright stellar systems". Monthly Notices of the Royal Astronomical Society. 389 (2): 869. arXiv:0806.2878. Bibcode:2008MNRAS.389..869E. doi:10.1111/j.1365-2966.2008.13596.x.
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