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R Trianguli Australis is a star in the constellation Triangulum Australe. A Cepheid variable, its apparent magnitude ranges from 6.33 to 6.90 over 3.38926 days. It is a yellow-white supergiant that pulsates between spectral types F5Ib/II-G5. Its radius is 29.7 times that of the Sun.
References
R Trianguli Australis Wikipedia(Text) CC BY-SA