Cardassian Celtris III

History:
Barren, uninhabited, Class-M planet located in Cardassian space,. In 2369, Cardassian
disinformation that a new metagenic weapon was being developed tricked Starfleet into sending a covert Starfleet team to Celtris III.
There, Captain Jean-Luc Picrad was captured.
TNG "Chain of Command, Part I" ; Star Trek Encyclopedia II
.