2003    Images of the dwarf planet Eris are taken and subsequently used in its discovery by the team of Michael E. Brown, Chad Trujillo, and David L. Rabinowitz.

2003    Astronomers Michael E. Brown, Chad Trujillo, and David L. Rabinowitz discover 90377 Sedna, a Trans-Neptunian object.

2005    Eris, the largest known dwarf planet in the solar system, is discovered by the team of Michael E. Brown, Chad Trujillo, and David L. Rabinowitz using images originally taken on October 21, 2003, at the Palomar Observatory.