Milos Tichy (1,2), Michaela Honkova (1,3), Jana Ticha (1), Michal Kocer (1)
(1) Klet Observatory, Zatkovo nabrezi 4, CZ-370 01 Ceske Budejovice South Bohemia, Czech Republic; e-mail: mtichy@klet.cz
(2) Czech Technical University in Prague, Faculty of Civil Engineering, Department of Advanced Geodesy
(3) Brno University of Technology, Faculty of Mechanical Enginnering, Institute of Mathematics

Abstract.
The Near-Earth Objects (NEOs) belong to the most important small bodies of the solar system, having the capability of close approaches to the Earth and even possibility to collide with the Earth.

We present here the system of discovery of these dangerous objects, methods for selecting useful and important targets for NEO follow-up astrometry, system of impact probabilities calculations, and also determination of impact site and evacuation area.

Moreover methods and techniques used at the Klet NEO follow-up CCD astrometric programme, using 1.06-m and 0.57-m telescopes, are also presented.

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