description Avior Overview
Avior, designated Epsilon Carinae, is a binary star system situated in the southern constellation of Carina. It consists of an aging orange giant star and a hotter blue-white main-sequence companion orbiting each other. Located approximately 630 light-years from Earth, the system is clearly visible to the naked eye from the Southern Hemisphere. Due to its brightness and distinct position, Avior is one of the 58 standard navigational stars traditionally used for celestial navigation.
insights Ranking position
Avior ranks #128 of 221 in the Star ranking, behind Elnath, ahead of Markab.
help Avior FAQ
Why is Epsilon Carinae called Avior?
Avior was assigned as a practical proper name when navigational stars were being selected for an air almanac in the late 1930s. Epsilon Carinae and Alpha Pavonis, now called Peacock, lacked convenient traditional names for that purpose.
Can Avior be seen from the Northern Hemisphere?
Avior lies deep in the southern constellation Carina, so it is best observed from the Southern Hemisphere. From much of Europe, Canada, and the northern United States, it never rises above the horizon.
Is Avior one star or a binary system?
Avior is a binary system whose combined light appears as a single bright point to unaided eyes. Its two stellar components are physically associated and orbit a common center of mass.
Why is Avior useful for celestial navigation?
Avior is bright, readily identifiable in the southern sky, and included in the standard set of navigational stars used with a sextant and nautical almanac. Its position in Carina also helps navigators distinguish it from nearby bright stars such as Canopus and Miaplacidus.
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