T Centauri is a variable star located in the far southern constellation Centaurus.[1] It varies between magnitudes 5.56 and 8.44 over 181.4 days, making it intermittently visible to the naked eye.[2] Pulsating between spectral classes K0:e and M4II:e,[2] it has been classed as a semiregular variable,[1] though Sebastian Otero of the American Association of Variable Star Observers has noted its curve more aligned with RV Tauri variable stars and has classified it as one.[2]
| Observation data Epoch J2000.0[1] Equinox J2000.0[1] | |
|---|---|
| Constellation | Centaurus[1] |
| Right ascension | 13h 41m 45.56335s [1] |
| Declination | −33° 35′ 50.5658″ [1] |
| Apparent magnitude (V) | 5.56 a- 8.44[2] |
| Spectral type | K0:e-M4II:e[2] |
| Other designations | |
| Database references | |
| SIMBAD | data |
The variability of the star was discovered in 1894 by Ernest Elliott Markwick, and independently by Williamina Fleming in 1895.[4][5]
References
edit- ^ a b c d e f SIMBAD, T Centauri (accessed 22 July 2014)
- ^ a b c d e Watson, Christopher (27 December 2012). "T Centauri". AAVSO Website. American Association of Variable Star Observers. Retrieved 22 July 2014.
- ^ "ASAS All Star Catalogue". The All Sky Automated Survey. Retrieved 8 December 2021.
- ^ Markwick, E. E. (July 1895). "Note on the variable star T Centauri, Cord. GC. 18609". Astronomische Nachrichten. 138 (13): 213. Bibcode:1895AN....138..213M. doi:10.1002/asna.18951381304. Retrieved 19 December 2024.
- ^ "T Cen". The International Variable Star Index. AAVSO. Retrieved 19 December 2024.
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