Abstract
Observations of Mars and Venus-crossing asteroid (5131) 1990 BG and the near-Earth approaching asteroid (13553) Masaakikoyama 1992 JE were made using ZA-320M and MTM-500M telescopes of the Central Astronomical Observatory of the Russian Academy of Sciences at Pulkovo. Evolution of their orbits was investigated taking into account the Yarkovsky effect, as well as the solar radiation pressure influence for various values of albedo of these objects. The obtained results were summarized and compared with results of the Yarkovsky effect for (308635) 2005 YU55, (418094) 2007 WV4, 2017 VR12 and (276033) 2002 AJ129, which had been studied earlier. Conclusions about non-gravitational effects on the motion of potentially hazardous asteroids were drawn.
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