BP Circini
Star in the constellation Circinus
BP Circini is a binary star system in the southern constellation of Circinus. It is located at a distance of approximately 3,300 light years from the Sun based on parallax.
The variability of this star was discovered by D. W. Kurtz in 1979. A small-amplitude Cepheid variable, its apparent magnitude ranges from 7.37 to 7.71 over 2.39810 days. A spectroscopic binary, the primary is a yellow-white bright giant of spectral type F2 or F3II. The spectrum shows peculiarities in the metallic lines. The secondary is a 4.7 solar mass (M☉) blue-white main sequence star of spectral type B6.
Sources and credits
This article is adapted from the Wikipedia article “BP Circini”, written by its contributors and licensed under CC BY-SA 4.0. Fathomly has changed the layout, removed citation markers, navigation and maintenance notices, and adjusted punctuation. This adapted version is shared under the same license. For references, see the original article.
Images, from Wikimedia Commons:
- BPCirLightCurve.png by PopePompus, CC BY-SA 4.0
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