Dark matter asteroid
A dark matter asteroid was a celestial object composed of dark matter, that emitted electromagnetic radiation.

In 2376, a graviton ellipse being investigated by the  was attracted to a dark matter asteroid. The two anomalies collided, causing severe gravimetric distortions inside the ellipse that caused damage to the . ()

See also 
Dark matter proto-comet

ja:暗黒物質小惑星 
nl:Donkere materie asteroïde
de:Dunkle-Materie-Asteroid
Celestial objects