T Cephei
 Location of T Cep | |
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Cepheus |
| Right ascension | 21h 09m 31.78089s[1] |
| Declination | +68° 29′ 27.2038″[1] |
| Apparent magnitude (V) | 7.33[2] |
| Characteristics | |
| Spectral type | M6-9e[3] |
| U−B color index | +0.33[2] |
| B−V color index | +1.49[2] |
| Variable type | Mira[4] |
| Astrometry | |
| Radial velocity (Rv) | −8.03[5] km/s |
| Proper motion (μ) | RA: −43.75[1] mas/yr Dec.: −45.46[1] mas/yr |
| Parallax (π) | 5.33 ± 0.90[1] mas |
| Distance | 190[4] pc |
| Details | |
| Radius | 329+70 −50[6] R☉ |
| Luminosity | 5,700[4] L☉ |
| Temperature | 2,400[4] K |
| Other designations | |
| Database references | |
| SIMBAD | data |
T Cephei is a Mira variable star in the constellation Cepheus. Located approximately 190 parsecs (620 ly) distant, it varies between magnitudes 5.2 and 11.3 over a period of around 388 days.[4][7]
It is a star of spectral class M6-9e, whose radius is 329 solar radii.
Meeting its coordinates are: Lat: 88.346 °; Long: -47.756 ° Its rotation speed is 20 km/s and radial -3.4 km/s.
See also
References
- 1 2 3 4 5 Van Leeuwen, F. (2007). "Validation of the new Hipparcos reduction". Astronomy and Astrophysics. 474 (2): 653. arXiv:0708.1752
. Bibcode:2007A&A...474..653V. doi:10.1051/0004-6361:20078357. - 1 2 3 Ducati, J. R. (2002). "VizieR Online Data Catalog: Catalogue of Stellar Photometry in Johnson's 11-color system". CDS/ADC Collection of Electronic Catalogues. 2237. Bibcode:2002yCat.2237....0D.
- ↑ Keenan, Philip C.; Garrison, Robert F.; Deutsch, Armin J. (1974). "Revised Catalog of Spectra of Mira Variables of Types ME and Se". Astrophysical Journal Supplement. 28: 271. Bibcode:1974ApJS...28..271K. doi:10.1086/190318.
- 1 2 3 4 5 Danilovich, T.; Teyssier, D.; Justtanont, K.; Olofsson, H.; Cerrigone, L.; Bujarrabal, V.; Alcolea, J.; Cernicharo, J.; Castro-Carrizo, A.; García-Lario, P.; Marston, A. (2015). "New observations and models of circumstellar CO line emission of AGB stars in the Herschel SUCCESS programme". Astronomy & Astrophysics. 581: A60. arXiv:1506.09065. Bibcode:2015A&A...581A..60D. doi:10.1051/0004-6361/201526705.
- ↑ Famaey, B.; Jorissen, A.; Luri, X.; Mayor, M.; Udry, S.; Dejonghe, H.; Turon, C. (2005). "Local kinematics of K and M giants from CORAVEL/Hipparcos/Tycho-2 data. Revisiting the concept of superclusters". Astronomy and Astrophysics. 430: 165. arXiv:astro-ph/0409579. Bibcode:2005A&A...430..165F. doi:10.1051/0004-6361:20041272.
- ↑ Gerd Weigelt; et al. (2003). "JHK-band spectro-interferometry of T Cep with the IOTA interferometer". SPIE. 4838: 181–184.
- ↑ VSX (4 January 2010). "T Cep". AAVSO Website. American Association of Variable Star Observers. Retrieved 1 July 2014.
External links
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