THE FK5 ZERO-POINT CORRECTION BY RADAR AND OPTICAL DATA OF NEAR-EARTH ASTEROIDS

Yagudina E.I.

Institute of Applied Astronomy, Russian Academy of Sciences, Zhdanov str., 8, St-Petersburg 197042, Russia
E-mail: eiya@ipa.rssi.ru

The method for the estimation of the corrections to the fundamental catalogue equinox and equator has been developed using the combined radar and optical data of near-Earth asteroids. The corrections tothe zero-point FK5 based on the processing of about 6000 radar and optical observations of ten near-Earth asteroids almost for sixty years time interval have been obtained.

The analysis of parameters obtained and comparison with the results of other researchers revealed that the zero-point of the FK5 was in need of small correction.