Matiovsky IV

Matiovsky IV was the fourth planet in its star system, in the Alpha Quadrant. Located in Cardassian space, a monitoring station orbited this planet.

In the 2360s, the Bajoran splinter group Kohn-Ma allegedly assaulted this station, resulting in disruption to Cardassian subspace communications for twelve hours. Bajoran Intelligence believed this attack had the aim of preventing the station from monitoring a covert operation of the Kohn-Ma in Sector 52043. Gul Cazanjian reported this attack to Cardassian Central Command.

An intelligence report of this event was stored in the Bajoran Intelligence net , which was accessed in 2369 by Major Kira Nerys when she was looking into Kohn-Ma activities. (DS9: "Past Prologue")

This planet was only mentioned in writing.
This planet's quadrant of origin is inferred based on the position of the Cardassian Union in the star chart appearing in the Star Trek: Picard episode "Maps and Legends".