For other uses, see Neptune.

Neptune (Sol VIII) is a planet in the Sol system. The planet is the eighth planet from the sun, and is a gas giant.

In 2065, the UNSS Amity rescued a disabled Vulcan ship discovered near Neptune, marking official first contact between Humans and Vulcans. (TOS novel: Strangers from the Sky)

This data point was invalidated canonically by the events of TNG movie: Star Trek: First Contact.

Federation starships that are called USS Neptune are either named for this world, or for the mythological figure the planet was named after.

Neptune has at least thirteen moons, the largest of which is Triton. The second moon (by distance from Neptune) is Nereid which housed a Federation research facility in the 23rd century. (TOS - Section 31 novel: Cloak)


The RPG The Dominion War Sourcebook: The Fires of Armageddon, published by Last Unicorn Games after they had lost their Star Trek licence, states that prior to the Breen assault on Earth in late-2375, the Breen fleet attacked the outer defense perimeter of the Starfleet 3rd Fleet over Neptune.