Halka II (also known as Halkan, Nola Boradne V or Omicron Indi III) is an inhabited planet in the red star system of Omicron Indi, at coordinates 4.27S 4.58E (-29.2 -147.3 -6.7) in the Beta Quadrant. The only class M planet in its system, the world is home to the Halkan civilization. Halka is located in the general vicinity of Eminiar, M-113, Ariannus, Winston's Star, Elba and Axanar. (TNG novel: Dark Mirror; TOS episode & novelization: Mirror, Mirror; FASA RPG module: The Federation; ST reference: Star Trek Maps)