31. Since tidal forces overwhelm gravity within the Roche limit , no large satellite can coalesce out of smaller particles within that limit. 32. :: : Are roche limit and hydrostatic equilibrium relavent ? ~ U ) 01 : 46, 16 February 2010 ( UTC) 33. There were some edits made to the article Roche limit which changed equations using the < math > tag. 34. In the distant future these moons will impact the planet or penetrate deeply enough within their Roche limit to be tidally disrupted into fragments. 35. :So to sidestep these Roche limit questions, assume an Iron planet the size of the Earth plunging into a Jupiter or Saturn. 36. Epsilon Coronae Australis is an W Ursae Majoris variable, indicating that it has a contact companion within the Roche Limit of the primary. 37. The roche limit isn't all that far from the Earth's surface anyway ( about 1.5 times the radius ). 38. Indeed, almost all known planetary rings are located within their Roche limit ( Saturn's E-Ring being a notable exception ). 39. After forming, the ring would spread laterally, leading to satellite formation from whatever portion of it spreads beyond the centaur's Roche Limit . 40. Within the Roche limit , bodies of rocky material are dense enough to accrete additional material, whereas less-dense bodies of ice are not.