I'm not sure what u want me to say?

I'm not an astronomer, I'm just a kiwi block who enjoys learning about alternative subjects.

"For several years, astronomers have observed that a handful of the small icy bodies that lie in the so-called "scattered disc" beyond the orbit of the planet Neptune, including the dwarf planet Sedna, deviate from the paths around the sun that would be expected based on the gravitational pulls of all the known objects in the solar system.
Sedna, for example, swings around the sun in an extremely elongated orbit — tracing out a very long oval. "Sedna's orbit is truly peculiar," said Mike Brown, an astronomer at Caltech who led the team that discovered Sedna in 2003."