Changing the non-gravitational accelerations of the comet Tempel 1 due a collision with impactor of Deep Impact space mission

Bondarenko Yu.S., Medvedev Yu.D.

EPSC Abstracts, V. 6, EPSC-DPS2011-156, 156–157 (2011)

Аннотация

Using positional observations of the comet Tempel 1 from 1967 to 2010 the non-gravitational acceleration and instantaneous change of the comet velocity due to collision with impactor of Deep Impact space mission were determined. Instantaneous change of velocity was compared with the perturbation, calculated on a basis of velocity and mass of the ejected matter. Comparison of these values showed that the comet obtained a much greater perturbation than it follows from the estimations of mass of ejected matter.