[6] The fainter secondary companion has an apparent visual magnitude of 3.85,[4] which, if it were a solitary star, would be bright enough to be seen with the naked eye.

Of the fifty-seven navigation stars included in the new almanac, two had no classical names: Epsilon Carinae and Alpha Pavonis.

Alpha Pavonis was named "Peacock", a translation of Pavo, whilst Epsilon Carinae was called "Avior".

Donald Sadler, then Superintendent of HM Nautical Almanac Office, recounted this in his memoirs[17] but failed to explain the etymology of the invented name.

[20] Consequently, ε Carinae itself is known as 海石一 (Hǎi Shí yī, English: the First Star of Sea Rock.