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Discovery and study of Comet 67P/Churyumov--Gerasimenko, the main target of the Rosetta space mission

Churyumov, K.

Rosetta, a European space vehicle, which was 15 years in development, headed for short-period Comet 67P/Churyumov-Gerasimenko in February 2004. In September 1969 S. Gerasimenko and the author went to the Alma-Ata Astrophysical Institute to carry out a survey of short-period and new comets. At a later date of that month, the author examined the exp…

Rosetta space mission to Comet 67P/Churyumov--Gerasimenko

Churyumov, K. I.

We present preliminary results of study of middle-resolution optical spectra of Comet 153P/Ikeya--Zhang obtained on May 5, 2002 with the help of the 2.12-m reflector of the Guillermo Haro Astrophysical Observatory. Emission lines of the molecules C₂, C₃, CN, NH₂, CO (Asundi and triplet bands), and H₂O