In 2015, seeing the extraordinary results of the DAWN probe, I postulated the existence of the satellites of Ceres, whose tidal forces could have caused the melting of the ice sheet around the rocky core of this asteroïd. You know, I like bold assumptions. I even named these satellites: Triticum, Zea, Oriza, Sorghum and Astrebla.
I betted than we would see them in a few week during the first orbits of DAWN.
But five years after: no the shadow of a satellite on the pictures! (There are satellites of Ceres, but they are "quasi-satellites") (like Cruithne for the Earth). They pass at low altitudes from time to time, but too infrequently to generate enough heat.
We must therefore admit an internal source of heat in the rocky core of Ceres, and this heat source could well be LENR.