What are the gravity for Eris and Ceres: "
The surface gravity on Eris is estimated at 0.8 m/s^2.
And Ceres is estimated at 0.27 m/s^2.
By comparison, surface gravity on Earth is 9.8 m/s^2.
So Eris is about 1/12th the surface gravity of Earth, and Ceres is about 1/36th.
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