(covers information from several alternate timelines)
In a possible future timeframe, in 2395, after the successful invasion of the Romulan Star Empire by the Klingon Empire, this planet was located near the Federation-Klingon border. The colony's leader was Governor Worf. (TNG: "All Good Things...")
This planet was only mentioned in dialogue.
This planet's quadrant of origin is inferred based on the position of its star system as seen in the star charts appearing in the Star Trek: Discovery episode "Magic to Make the Sanest Man Go Mad" and in the Star Trek: Picard episode "Maps and Legends". In the latter chart, the H'atoria system is shown as being located in neutral space.