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Chemical and Isotope Composition of Comet 67P/Churyumov-Gerasimenko: The Rosetta-Philae Mission Results Reviewed in the Context of Cosmogony and Cosmochemistry
Dorofeeva, V. A.
The studies of the composition and structure of comet 67P/Churyumov-Gerasimenko—a short-period comet of Jupiter's family—which was an object of the recent Rosetta-Philae space mission, yielded results unique in many respects, since it was the first time that a comet was investigated in situ for a long stretch of time under varying conditions of in…
Digitization of Astronegatives of the Pulkovo Glass Library: Positions of Saturn's Major Satellites in the Period 1972-1982 in the Gaia DR2 System
Izmailov, I. S.; Vasil'eva, T. A.; Khovrichev, M. Yu. +3 more
We present the results of the re-reduction of Pulkovo photographic plates with images of Saturn's major satellites in the Gaia DR2 catalog system (169 plates, 3007 individual positions). Astronegatives were taken with the 26-inch refractor at the Pulkovo Observatory between 1972 and 1982. The intrinsic accuracy of measurement of astronegatives usi…
Prospects of Ground-Based and Orbital Studies of Comets and Meteors in the Post-Rosetta Mission Era
Sachkov, M. E.
In this paper, we review the current state and prospects of comet and meteor studies. Special attention is paid to scientific tasks that should be solved with a help of space missions.
Results of Astrometric Observations of Distant Satellites of Jupiter with the New Telescope of the Caucasian Mountain Observatory, Sternberg Astronomical Institute, Moscow State University
Emelyanov, N. V.; Safonov, B. S.; Vozyakova, O. V. +1 more
Replenishment of the database of observations of distant satellites of planets is always useful, since the accuracy of the motion models and ephemeris depends not only on the accuracy of observations. Accuracy improves with increasing observation time. Therefore, observations made even with the same accuracy are in demand. Astrometric observations…