Vícar

Vícar is a municipality of Almería province, in the autonomous community of Andalusia, Spain.

Demographics

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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 magnitudes 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 +4.41.

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 magnitudes with a period equal to its orbital period of 195 days.

References

List of most luminous stars

Below is a list of stars arranged in order of decreasing luminosity (increasing bolometric magnitude). Accurate measurement of stellar luminosities is quite difficult in practice, even when the apparent magnitude is measured accurately, for four reasons: