RT Trianguli Australis
| Observation data Epoch J2000.0 Equinox J2000.0 (ICRS) |
|
|---|---|
| Constellation | Triangulum Australe |
| Right ascension | 16h 34m 30.89188s [1] |
| Declination | −63° 08′ 00.8395″ [1] |
| Apparent magnitude (V) | 8.1-9.79[2] |
| Characteristics | |
| Evolutionary stage | Type II Cepheid |
| Spectral type | F8:(R)-G2I-II[2] |
| Astrometry | |
| Proper motion (μ) | RA: -4.00 ± 1.48[3] mas/yr Dec.: -14.25 ± 1.43[3] mas/yr |
| Parallax (π) | 1.26 ± 1.50[3] mas |
| Other designations | |
RT Trianguli Australis, or RT TrA, is a BL Herculis variable (type II Cepheid) in the constellation of Triangulum Australe.[1] It ranges between apparent magnitudes 8.1 and 9.79 over a period of 22 days.[2] It is unusual in that it is a carbon-rich type II Cepheid.[4]
References
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