Ceres

Ceres is the smallest identified dwarf planet in the Sol System and the only one in the asteroid belt. It was discovered on 1 January 1801 by Giuseppe Piazzi and is named after the Roman goddess of growing plants, the harvest and of motherly love.

In 30 November 2142, astronomer Winston Rylo reported from his lunar observatory that an asteroid had drifted away from the innermost ring of the asteroid belt. He speculated that it may have been knocked out of orbit in the belt by an impact with Ceres. He named it Rylo-7 and posted its coordinates in CommLink's AstroData service.