The Federation retirement settlement to which Captain Montgomery Scott was travelling aboard the transport Jenolan in 2294 when the ship crashed on the surface of a Dyson sphere.
The Norpin colony is mentioned in the Next Generation episode Relics. After a career of more than half a century, Scott had decided to settle there, and he took passage on the Jenolan to reach it.
The ship never arrived. Caught by the gravity of an uncharted Dyson sphere, it crashed on the outer shell, and Scott kept himself alive by locking his pattern in a modified transporter loop for seventy-five years until the Enterprise found him in 2369.
Once revived, he confesses that he had never really wanted to stop working. At the end of the episode Picard lends him a shuttlecraft, and Scott remarks that he may get to Norpin one day but is in no hurry to do so.