P/2010 A2 is an object on an asteroidal orbit that was observed to have an extended tail or debris trail in January 2010 .
In this work , we fit the outburst of P/2010 A2 with a conical burst model , and verify previous suspicions that this was a one–time collisional event rather than an sustained cometary outburst , implying that P/2010 A2 is not a new Main Belt Comet driven by ice sublimation .
We find that the best–fit cone opening angle is \sim 40 ^ { \circ } to \sim 50 ^ { \circ } , in agreement with numerical and laboratory simulations of cratering events .
Mapping debris orbits to sky positions suggests that the distinctive arc features in the debris correspond to the same debris cone inferred from the extended dust .
From the velocity of the debris , and from the presence of a velocity maximum at around 15 cm s ^ { -1 } , we infer that the surface of A2 probably has a very low strength ( \lesssim 1 kPa ) , comparable to lunar regolith .