|Alpha Carinae II|
|Native Species:||Alpha Carinae II natives|
|Location:||In orbit of Alpha Carinae|
The planet was a conventional M class world with an oxygen-nitrogen atmosphere. On the planet's surface, there were two major landmasses and a number of islands. There were at least twenty-nine other planets that were biologically similar to Alpha Carinae II.
In 2268, the USS Enterprise surveyed this planet as a test of the M-5 computer's capabilities. For that test, the starship was assigned to send a general survey party to the planet's surface. The party was to avoid all contact with the indigenous lifeforms. This test was cancelled by Captain James T. Kirk after he was informed by Chief Engineer Montgomery Scott that the M-5 computer was shutting down systems across the ship. (TOS: "The Ultimate Computer")