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It would seem so. Internal differentiation would imply hydrostatic equilibrium. But the context is different: formation of the Solar system vs. current geology.
Hm, I take that back. You could perhaps have partial differention without full equilibrium. Also, what about a case like Vesta, which was (presumably) once in equilibrium, but no longer is? It's a protoplanet, but is it a DP? — kwami (talk) 00:27, 11 March 2011 (UTC)[reply]
Do we even know enough to say? The current definition of pp's would probably make them all dp's, but the current definition does not include Ceres. — kwami (talk) 00:47, 11 March 2011 (UTC)[reply]
Vesta and Pallas are proto-planets, but not accepted as dwarf planets. I will be very curious to see what we learn of Vesta's interior and crust. -- Kheider (talk) 02:17, 11 March 2011 (UTC)[reply]
The definition of a 'protoplanet' gives a size and mass range much larger than the Main-Belt protoplanets given as examples. — kwami (talk) 22:14, 10 March 2011 (UTC)[reply]
Yes, it should. What is a protoplanet might be in flux, but somebody said that "Mars is different, it is a protoplanet". Or maybe an "oligarch". Rursus dixit. (mbork3!) 23:16, 5 August 2011 (UTC)[reply]