Sedna

Discovered recently in 2003, Sedna is a candidate dwarf planet that resides in the Kuiper Belt. Researchers have questioned whether this object is a part of the theoretical Oort cloud, but not enough evidence exists to make this conclusion. Not much is known about the candidate, as only observations from ground-based telescopes have gathered light from the surface. Based on spectroscopic measurements of Sedna, the surface is expected to contain both water ice and methane ice, like the surface on Pluto. However, the surface of Sedna is red, comparable to the surface of Mars. More information is expected to be gathered about Sedna in the future.