- You may be looking for the SS Mariposa.
Mariposa is a M-class planet that was settled by Humans from the SS Mariposa in the 22nd century. While attempting to land on the surface, the skin of the ship was breached, killing all but five of the colonists. As a result, the Mariposa colony was comprised of numerous clones.
The USS Enterprise-D evacuated the colonists from Bringloid V to Mariposa in 2365. (TNG: "Up The Long Ladder")
- An early draft of the script referred to that planet as NB2323.