Yarkovsky effect in the motion of asteroids in retrograde orbits

Paweł Kankiewicz and Ireneusz Włodarczyk

Since the last few years, many small bodies in retrograde orbits was discovered, classified as asteroids. Main aim of our work is the analysis of their dynamical past and future. For 56 asteroids in retrograde orbits (i > 90) we studied the orbital evolution and calculated median dynamical lifetimes. Due to important role of the Yarkovsky effect in the motion of small bodies, we decided to apply the model with the Yarkovsky forces. Because the physical properties of these objects are still not well determined, we collected thermal parameters from literature or calculated from available formulas. Results obtained with these parameters allowed us to estimate the influence of the Yarkovsky effect on the stability of retrograde orbits.

Proceedings of the Polish Astronomical Society, vol. 3, 286-288 (2016)

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