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

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

Jun 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005kfnts...5..487c&link_type=abstract

Kinematika i Fizika Nebesnykh Tel, Suppl, v. 5, p. 487-490

Astronomy and Astrophysics

Astrophysics

Scientific paper

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 exposure of Comet 32P/Comas Sola made on September 11.92 UT, 1969 and found a cometary object near the plate centre. The author assumed it to be the expected short-period Comet 32P/Comas Sola. Later explorations at the Kyiv University revealed that this comet's position differed from predicted calculations for Comet 32P by 1.8°. It was a new comet. The comet had an apparent magnitude of 13 and the faint tail about 1 arcmin in length at a position angle of 280°. On the basis of the observations of Comet 67P obtained in Nizhny Arkhyz with the help of the 6-m BTA reflector of the SAO RAS, some physical parameters of the cometary plasma tail (coefficients of diffusion D||, Dbot and induction of magnetic field B) were determined (Jan. 12.105 UT, 1983: D|| = (5.07\cdot 1014 -> 1.21\cdot 1015) cm2/s, Dbot = (5.73\cdot 1013 - 1.37\cdot 1014) cm2/s, B= (46 - 111) nT; Jan. 13.124 UT, 1983: D|| = (4.67\cdot 1014 -> 1.14\cdot 1015) cm2/s, Dbot = (4.30\cdot 1013 - 1.05\cdot 1014) cm2/s, B= (55 - 134) nT). The author hope that the Rosetta space mission will obtain valuable data for solving the fundamental scientific problem on the origin and evolution history of the Solar System.

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