There are currently 3 constellations in the catalog of the International Astronomical Union whose names begin with the letter “O”.
The following table lists them all. Here’s what each of the columns mean:
Name: The proper or colloquial name for the constellation.
Abbreviation: A reduced version of the constellation name used generally to refer to the stars it contains.
Genitive: The ‘scientific’ name for the constellation in the IAU catalog. This is the name used to give stars their scientific name, or “designation”.
Meaning: Meaning or English translation for the name of the star.
Brightest Star: Name of the star with the biggest magnitude in the constellation
|Octans||Oct||Octantis||Octant (instrument)||Nu Octantis|
This list does not include some of the proposed star names that are proposed every year, but still haven’t been fully approved and made official.
Find more constellation names that start with the letter: