Orion I

From Memory Alpha, the free Star Trek reference

Orion I was the first planet in the Orion system, location of a prestigious Institute of Cosmology. Crewman Mortimer Harren had hoped to attend the Institute of Cosmology there, and thus signed onto the USS Voyager because a year of field experience was required for admittance. (VOY: "Good Shepherd")

This may be the same place as Orion.