T Cephei
From Infogalactic: the planetary knowledge core
| 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 | |
| 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][6]
References
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