Proceedings of the International Astronomical Union

Contributed Papers

Kharkiv study of near-Earth asteroids

Yu. N. Kruglya1a2, N. M. Gaftonyuka3, I. N. Belskayaa1, V. G. Chiornya1, V. G. Shevchenkoa1, F. P. Velichkoa1, D. F. Lupishkoa1, A. A. Konovalenkoa4, I. S. Falkovicha4 and I. E. Molotova5

a1 Institute of Astronomy of Kharkiv National University, Sumska str. 35, Kharkiv 61022, Ukraine, email: krugly@astron.kharkov.ua

a2 Main Astronomical Observatory, NASU, Zabolotny str. 27, Kyiv 03680, Ukraine

a3 Crimean Astrophysical Observatory, Simeiz 98680, Ukraine

a4 Institute of Radio Astronomy, NASU, Chervonopraporna str. 4, Kharkiv 61002, Ukraine

a5 Keldysh Institute of Applied Mathematics, RAS, Miusskaya sq. 4, Moscow 125047, Russia

Abstract

The regular CCD observations of near-Earth asteroids (NEAs) in the Institute of Astronomy of Kharkiv National University were initiated in 1995 within the framework of asteroid hazard problem in collaboration with the DLR, Institute of Planetary Research (Berlin). The main aim of the study is a determination of rotation periods and shapes of NEAs as well as astrometry of newly discovered objects. We also carry out the absolute photometry of NEAs in BVRI bands in order to put constraints on surface properties and to estimate their diameters. The observations are carried out with 0.7-m telescope of the Institute of Astronomy (Kharkiv) and with 1-m telescope of the Crimean Astrophysical Observatory (Simeiz) in the standard Johnson-Cousins photometric system. Some observations were made as an optical support of radar observation of NEAs. We present the results of photometric observations of 21 NEAs obtained in 2004-2006 which include asteroid rotation properties, diameters and shapes.

Keywords

  • Photometry;
  • asteroid;
  • lightcurves;
  • asteroid;
  • rotation