T Persei
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Perseus |
| Right ascension | 2h 19m 21.87884s[1] |
| Declination | +58° 57' 40.3271"[1] |
| Apparent magnitude (V) | 8.34-9.7[2] |
| Characteristics | |
| Spectral type | M2I[3] |
| Variable type | Semiregular[1] |
| Astrometry | |
| Radial velocity (Rv) | -40.85[1] km/s |
| Proper motion (μ) | RA: 0.31[1] mas/yr Dec.: -2.42[1] mas/yr |
| Parallax (π) | 2.15 ± 1.24 mas |
| Distance | 2,345±55[3] pc |
| Absolute magnitude (MV) | -6.90±0.07[3] |
| Details | |
| Mass | 9-12[3] M☉ |
| Radius | 490-530[3] R☉ |
| Luminosity | 42,000 - 50,000[3] L☉ |
| Temperature | 3750 ± 60 K[3] K |
| Other designations | |
T Per, HD 14142 | |
T Persei is a red supergiant located in the Double Cluster in Perseus, around 2 degrees north of them. It is a semiregular variable star, whose brightness varies from magnitude 8.34 to 9.7 over a period of 2430 days.[2]
References
- ↑ 1.0 1.1 1.2 1.3 1.4 1.5 "SIMBAD basic query result: T Persei - Semi-regular pulsating Star". SIMBAD, Centre de Données astronomiques de Strasbourg. Retrieved 22 April 2015.
- ↑ 2.0 2.1 Watson, Christopher (4 January 2010). "T Persei". AAVSO Website. American Association of Variable Star Observers. Retrieved 22 April 2015.
- ↑ 3.0 3.1 3.2 3.3 3.4 3.5 3.6 Baron, F.; Monnier, J. D.; Kiss, L. L.; Neilson, H. R.; Zhao, M.; Anderson, M.; Aarnio, A.; Pedretti, E.; Thureau, N.; ten Brummelaar, T. A.; Ridgway, S. T.; McAlister, H. A.; Sturmann, J.; Sturmann, L.; Turner, N. "CHARA/MIRC Observations of Two M Supergiants in Perseus OB1: Temperature, Bayesian Modeling, and Compressed Sensing Imaging". The Astrophysical Journal 785 (1): 13. Bibcode:2014ApJ...785...46B. doi:10.1088/0004-637X/785/1/46.
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