Kuibyshev military academy and Alexandra Ivanovna Ipatova née Ropakova (1927-2010), a teacher of mathematics.
The wife of Sergei, Valentina Ivanovna Ipatova (Artioukhova), is a senior scientist, PhD, at the Lomonosov Moscow State University.
Keldysh Institute of Applied Mathematics of the Russian Academy of Sciences (in the sector of RAS Academician T.M.
The outer layers of the Earth and Venus could accumulate similar material from the feeding zone of the terrestrial planets.
[17] Ipatov made computer simulations of migration of small bodies (asteroids, comets, trans-Neptunian objects, planetesimals).
For example, in 1989, he showed for the first time that for the 5:2 resonance with Jupiter, the range of initial values of semi-major axes, eccentricities, and orbital inclinations at which test asteroids begin to cross the orbit of Mars in time of no more than 100 thousand years is close to the zone avoided by real asteroids.
Bodies migrated from the zone of the outer asteroid belt could also deliver a considerable amount of water to the Earth and could be one of the sources of the late-heavy bombardment.
[21] the variations in the number of near-Earth objects over the last billion years, and also studied the depths of lunar craters in the region of the seas and continents[22] Together with John Mather, Ipatov numerically studied the migration of dust particles with initial velocities and positions the same as those of asteroids, trans-Neptunian objects and comets.
[24] For the first time in history, the NASA spacecraft dropped a probe on a comet, which rammed its surface, having previously photographed it at close range.
[26][27] Together with Alan Boss, Ipatov simulated triggered collapse of the presolar dense cloud core and injection of short-lived radioisotopes by a supernova shock wave.
In collaboration with James Cho,[30] he studied (for example, using the SBDART program) the transfer of radiation in the atmospheres of test extrasolar planets.
[2] In 2019, Ipatov was awarded with the F. A. Bredikhin Prize [ru][1] in astronomy of the Russian Academy of Sciences for the cycle of works "Formation and evolution of the Solar System".