New gravity field of comet 67P/C-G based on Rosetta's Doppler and optical data

Julien Laurent-Varin, Théo James, Jean-Charles Marty +3

We provide a new gravity field of Comet 67P-C/G up to degree 4. We detect mass heterogeneity in the comet nucleus. The loss of mass is restimated at 0.28\% of the comet's total mas…