Sednaball is a dwarf planetball on the edge of the solar system. Out of the 8 largest Trans-Neptunian objects, he is the only one without a detected moon. He is the most distant dwarf planetball of the Solar system (in the beginning of Kuiper Belt), so he is very lonely.
Like many KBOs, he likely has a mantle of water ice. He appears to be very red, even redder than Marsball, likely to the presence of tholins.
Orbit - Rotation
Sednaball follows an abnormally large and eccentric orbit, due to either being captured from another star or from a disturbance. He also has a relatively quick rotational period of approximately 10.2 hours.