RT Trianguli Australis
| Observation data Epoch J2000.0 Equinox J2000.0 (ICRS) |
|
|---|---|
| Constellation | Triangulum Australe |
| Right ascension | 16h 34m 30.89188s |
| Declination | −63° 08′ 00.8395″ |
| Apparent magnitude (V) | 9.43 - 10.18 |
| Characteristics | |
| Spectral type | F8:(R)-G2I-II |
| Variable type | BL Her |
| Astrometry | |
| Proper motion (μ) |
RA: -4.00 ± 1.48 mas/yr Dec.: -14.25 ± 1.43 mas/yr |
| Parallax (π) | 1.26 ± 1.50mas |
| Details | |
| Maximum | |
| Luminosity | 200 L☉ |
| Temperature | 6,500 K |
| Minimum | |
| Luminosity | 138 L☉ |
| Temperature | 5,200 K |
| Mass | 0.48 M☉ |
| Radius | 9.4 R☉ |
| Other designations | |
| Database references | |
| SIMBAD | data |
RT Trianguli Australis, or RT TrA, is a BL Herculis variable (type II Cepheid) in the constellation of Triangulum Australe. It ranges between apparent magnitudes 9.4 and 10.2 over a period of 1.95 days. It is unusual in that it is a carbon-rich type II Cepheid.
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