Pentam V

Pentam V was a planet in or near Federation space in the mid-23rd century, the home world of the Pentamians. In 2267, Captain James T. Kirk and Commander Spock visited Pentam V to negotiate for dilithium mining rights for the Federation. After twenty-seven non-stop hours of debate with the Pentamian Assembly, they secured those rights. (SS TOS (Ambition))