The object you are describing sounds like a dwarf planet. Pluto is the most famous example of a dwarf planet, but there are many others in the Kuiper Belt, a region beyond Neptune that is home to icy objects left over from the formation of the solar system.

Haumea is a dwarf planet located in the Kuiper Belt, about 4.3 billion miles from the sun. It is roughly 50 miles across and rotates once every 18 hours. It is three times farther from the sun than earth, and it has an elliptical orbit that takes it from about 35 AU to 51 AU from the sun. Haumea is a very cold object, with a surface temperature of about -392°F. It is composed mostly of water ice, with some rock and metal.

Haumea is a very interesting object, and scientists are still learning more about it. It is thought to have a large impact crater on its surface, and it may even have a ring system. Haumea is also a member of a family of objects called the "Haumea family", which are thought to have been formed by a collision that shattered a larger object.