HR 2554
HR 2554, also known as V415 Carinae and A Carinae, is an eclipsing spectroscopic binary of the Algol type in the constellation of Carina whose apparent visual magnitude varies by 0.06 magnitude and is approximately 4.39 at maximum brightness. Its primary is a G-type bright giant star and its secondary is an A-type main-sequence star. It is approximately 553 light-years from Earth. HR 2554 A The primary component, HR 2554 A, is a yellow G-type bright giant with a mean apparent magnitude of +4.4. HR 2554 B The secondary component, HR 2554 B, is a white A-type main-sequence dwarf, about three magnitudes fainter than the primary. HR 2554 binary system HR 2554 has two components in orbit around each other, making it a binary star. The semi-major axis of the secondary's orbit is 2.17 arcseconds. The two components regularly eclipse each other, making A Carinae a variable star. Its brightness varies by 0.06 magnitude with a period equal to its orbital period of 195 days. References Carina (constellation) G-type bright giants A-type main-sequence stars Algol variables Spectroscopic binaries Carinae, A 050337 032761 2554 Carinae, V415 CD-53 01613