Ice dwarf

Ice dwarf‏‎

(astronomy) An astronomical object, such as Sedna, larger than the solid part of a comet and containing more ice than an asteroid.

Ice dwarf‏‎s are celestial bodies in orbit around a sun at a semi-major axis greater than 30.331855 AU  and have sufficient mass for their self-gravity to overcome rigid body forces so that they assume a hydrostatic equilibrium (near-spherical)

It appears only the Union has real interest in Ice Dwarfs. There millions of uilized and occpied Ice Dwarfs  within Union Space.

Several examples in the Sol System

 * Enceladus
 * Mimas
 * Janus
 * Epimetheus
 * Eris
 * Haumea
 * Makemake