Shoemaker-Levy

Etymology
From the surnames of the astronomers Carolyn Shoemaker, Eugene Shoemaker and David Levy, who discovered several comets.

Proper noun

 * 1) Comet Shoemaker–Levy 9, a comet which collided with Jupiter.

Usage notes
Levy and the Shoemakers discovered at least thirteen comets together which are all named Comet Shoemaker-Levy, but Comet Shoemaker–Levy 9 is the only one generally referred to without its title or number.