Other
Scientific paper
Aug 2006
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006iaujd..10e..17c&link_type=abstract
Progress in Planetary Exploration Missions, 26th meeting of the IAU, Joint Discussion 10, 21-22 August 2006, Prague, Czech Repub
Other
Scientific paper
A theoretical model of formation of an artifical explosive crater on the surface of the comet 9P/Tempel 1 is considered. A decision is verified for well explored Arizona crater. Calculations showed that explosion of meteorite inside a target goes on for such depth of submergence where it reaches maximal braking. The copper impactor of the spacecraft Deep Impact which has mass of 372 kg, successfully collided with the 6-km icy nucleus of short-periodic comet 9P/ Tempel 1 at velocity of 10.2 km/s on July 4, 2005. As one of results of collision an artificial impact crater was formed on the surface of the comet Tempel 1 nucleus. the possible crater diameter on the nucleus of comet Tempel 1, formed by the impactor, must be equal from 22 to 57 m and its depth must be equal from 4.8 to 5.6 m. Using theoretical model (Opik's model) it has been shown that an artifical explosive crater by a diameter from 22 to 57 m and by a depth from 4.8 to 5.7 m must be formed on the nucleus surface as a result of the collision of the Deep Impact copper impactor with the comet 9P/Tempel nucleus. Maximal value of a diameter crater equal to 80 km for σ[p]= 1 ?N/m^2.^ Our results differ noticeably from results obtained others investigators of crater formation during this unique space experience. Unfortunately the real sizes of artificial crater in the course of the Deep Impact mission was not determined by direct measurements.
Chubko Larisa S.
Churyumov Klim I.
Kruchynenko Vitaliy G.
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