BP Circini is a star in the constellation Circinus. A Cepheid variable, its apparent magnitude ranges from 7.37 to 7.71 over 2.39810 days. It is a yellow-white supergiant of spectral type F2 or F3II. A spectroscopic binary, it has a 4.7 solar mass (M☉) companion that is a blue-white star of spectral type B6.
References
BP Circini Wikipedia(Text) CC BY-SA