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Analysis of the Systematic Errors of CCD-observations of Asteroids Performed in 2007 — 2008

A. A. Berezhnoy

Protecting the Earth against Collisions with Asteroids and Comet Nuclei, In: A. M. Finkelstein, W. F. Huebner, V. A. Shor (Eds) Proceedings of the International Conference “Asteroid-Comet Hazard-2009”, StP: Nauka, 107–109 (2010)

Keywords: Very Long Baseline Interferometry (VLBI), Near Earth Objects (NEOs), near-Earth asteroids (NEAs), systematic errors of CCD-observations, UCAC2 system, a statistical approach that used mean (O-C) values, reference stars, magnitude range, parameters of magnitude equation, common distortion

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Analysis of systematic errors based on CCD-observations taken with Normal Astrograph (D/F = 0.33 m/3.5 m, FOV = 18 16 arcmin, scale = 1 arcsec/pix) of Pulkovo observatory during 2007-2008 has been made. About 5000 CCD-images of 150 asteroids were processed and reduced to UCAC2 system. A statistical approach that used mean (O-C) values obtained for positions of reference stars within the field of view separated on square bins and magnitude ranges was applied. The positions of reference stars and asteroids were corrected according to parameters of magnitude equation and common distortion