The following is a list of unnamed asteroids.
Alpha and Beta Quadrants
Badlands Maquis asteroid
An M class asteroid in the Badlands.
In 2370, Commander Benjamin Sisko, Major Kira Nerys and Doctor Julian Bashir were ambushed by Maquis leader and former Starfleet Captain Calvin Hudson on this M class asteroid in the Badlands. (DS9: "The Maquis, Part I")
Dilithium processing facility
A Federation dilithium processing facility.
This unnamed asteroid was the location of a dilithium processing facility that utilized repurposed EMH-Mark Is in 2378. It was equipped with a hololab that had a copy of Photons Be Free under the file name 47-Beta. (VOY: "Author, Author")
Delta
Vidiian asteroid
A Vidiian asteroid.
In 2371, Vidiians Dereth and Motura hid in this asteroid aboard their Vidiian starship after they had stolen Neelix's lungs. USS Voyager followed the ship into the asteroid and apprehended the two Vidiians.(VOY: "Phage")
Gamma Quadrant
Chamra Vortex asteroid
The Ganges approaching the asteroid
The surface of the Chamra Vortex asteroid
The Chamra Vortex asteroid is one of millions of asteroids located in the Chamra Vortex. It has a breathable atmosphere.
In the 2360s, the criminal Croden hid his daughter, Yareth, in a stasis pod on this asteroid.
Later, in 2369, when Croden was to be returned to Rakhar by Odo on the USS Ganges, they took a detour to the vortex and were chased into it by a Miradorn raider. Under the control of Croden, they landed the runabout on this asteroid where Croden retrieved his daughter, lying to Odo that it was a Changeling colony. (DS9: "Vortex")