Stars and star systems (O)

List of stars and star systems beginning with the letter "O".

Star or star system	Arity	Makeup	Associated bodies	Locational references	Source citation
Oblik			Oblik III
Oblissa
Ocampa
Occult
Omega
Omega Corvus	system			Location of Omega Corvus colony, near galactic barrier, Alpha or Beta Quadrant	TOS video game: Judgment Rites
Omega Fornacis
Omicron Ceti
Omicron Eridani
Omicron-2 Eridani (40 Eridani, Keid)	trinary star	3 stellar masses	40 Eridani A, 40 Eridani B, 40 Eridani C, Vulcan, T'Khut, Ket-Cheleb, T'Khut, T'Rukhemai • Tel-Alep • Kal-Apton • Kir Alep • Vulcanis VII • Delta Vega	Eridanus constellation, visible from Sol (16 light-years), near Epsilon Eridani (6.4 light-years)
Omicron-2 Eridani A (40 Eridani A, Keid A)			Vulcan, T'Khut, Ket-Cheleb, T'Khut, T'Rukhemai • Tel-Alep • Kal-Apton • Kir Alep • Vulcanis VII • Delta Vega	Eridanus constellation, visible from Sol (16 light-years), near Epsilon Eridani (6.4 light-years)
Omicron-2 Eridani B (40 Eridani B, Keid B)
Omicron-2 Eridani C (40 Eridani C, Keid C)
Omicron Indi			planet Halka
Oomaru
Orendal
Organia
Oshionian