A shuttlecraft name used aboard both the original Enterprise and the Enterprise-A, most notably for the long-range craft Spock, Sulu and Uhura fly in The Slaver Weapon.
Copernicus was the name of more than one shuttlecraft under James Kirk's command, after the astronomer Nicolaus Copernicus.
In the animated episode The Slaver Weapon, Spock, Sulu and Uhura are taking a Slaver stasis box to Starbase 25 in a long-range shuttle of that name. A second box draws them to an ice planet in the Beta Lyrae system, where Kzinti pirates ambush them and take the box, which holds a shape-changing weapon.
A later Copernicus can be seen in the shuttlebay of the Enterprise-A in Star Trek V: The Final Frontier, beside the Galileo, which is the craft used in that film's landing at Nimbus III.