RT Trianguli Australis
Star in the constellation Triangulum Australe / From Wikipedia, the free encyclopedia
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RT Trianguli Australis, or RT TrA, is a BL Herculis variable (type II Cepheid) in the constellation of Triangulum Australe.
Quick Facts Constellation, Right ascension ...
Observation data Epoch J2000.0 Equinox J2000.0 (ICRS) | |
---|---|
Constellation | Triangulum Australe |
Right ascension | 16h 34m 30.89188s[2] |
Declination | −63° 08′ 00.8395″[2] |
Apparent magnitude (V) | 9.43 - 10.18[3] |
Characteristics | |
Spectral type | F8:(R)-G2I-II[3] |
Variable type | BL Her[3] |
Astrometry | |
Proper motion (μ) | RA: -4.00 ± 1.48[2] mas/yr Dec.: -14.25 ± 1.43[2] mas/yr |
Parallax (π) | 1.26 ± 1.50 mas[2] |
Details | |
Mass | 0.48[4] M☉ |
Radius | 9.4[4] R☉ |
Metallicity [Fe/H] | +0.04[5] dex |
Minimum | |
Luminosity | 138[6] L☉ |
Temperature | 5,200[6] K |
Maximum | |
Luminosity | 200[6] L☉ |
Temperature | 6,500[6] K |
Other designations | |
Database references | |
SIMBAD | data |
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