Yosemite 3 was an United Earth research station that was in service in the mid-22nd century. This unarmed station orbited Earth, and was manned usually with thirty to forty civilians.
It was destroyed, presumably with all hands, during an attack by Dolim's Xindi-Reptilian warship at the end of the Xindi crisis on February 14, 2154. (ENT: "Zero Hour")
For more information on the studio model, see VOY studio models.