Scattered beyond the Kuiper Belt is a disk of objects such as Eris and Sedna.

Brown clicked on a button to have the computer calculate just how far away the object was, and came up with a distance farther than Pluto, even farther than Sedna: about 97 AU. Then he ran some quick calculations to estimate how big the object was, assuming that it was as reflective as Sedna.

2010, Rodney S. Gomes, Jean S. Soares, Sedna, 2004 VN112 and 2000 CR105: the tip of an iceberg, Julio A. Fernández, Daniela Lazzaro, Dina Prialnik, Rita Schulz (editors), Icy Bodies of the Solar System: Proceedings of the 263rd Symposium of the International Astronomical Union (IAU S263), page 67,
We review two main scenarios that may have implanted Sedna, 2004 VN112 and 2000 CR105 on their current peculiar orbits.

Sedna

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