Follow-up CCD observations of near-Earth asteroids in 1999

Details Follow-up CCD observations of near-Earth asteroids in 1999 Follow-up CCD observations of near-Earth asteroids in 1999

Sep 2000

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000kfnts...3..217k&link_type=abstract

Kinematika i Fizika Nebesnykh Tel, Suppl, no. 3, p. 217-218

Astronomy and Astrophysics

Astronomy

Scientific paper

It is very important from the point of view of asteroid hazard problem both timely to discover ``dangerous" body and to know its main physical properties. To a middle of 2000 the total amount of these objects with good known orbits exceeded 1000. However, study of physical properties of near-Earth asteroids (NEA) falls considerably behind from the speed of their discovering. Today the data of rotations and shapes have been obtained for less then 20% of known NEA. In 1996 at Astronomical Observatory of Kharkiv University the regular CCD observations of NEA were started. The observations were carried out in collaboration with the DLR Institute for Planetary Exploration (Berlin) within the framework of European NEA discovery projects. The observation program includes obtaining both NEA lightcurves for a study of their rotation and shapes, and astrometric follow-up observations for newly discovered objects. For the observations we usually had 5--7 nights per month close to a new moon. Since these bodies have diameters about some kilometers or less the discovery occurs in a moment of their close approaching to Earth. This period of maximal visible brightness is most suitable to study physical properties, and we try to do our observations of asteroids just after their discoveries.

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