The orbit and dynamical evolution of the Chelyabinsk object

Vacheslav V. Emel’yanenko, Sergey A. Naroenkov, Peter Jenniskens and Olga P. Popova

Meteoritics & Planetary Science. doi: 10.1111/maps.12382

DOI: 10.1111/maps.12382, article first published online: 18 NOV 2014


The distribution of minimum solar distances shows that the most probable time for the encounters of the Chelyabinsk object with the Sun lies in the interval from −0.8 Myr to −2 Myr. This is consistent with the estimate of a cosmic ray exposure age of 1.2 Myr (Popova et al. 2013). A parent body of the Chelyabinsk object should experience strong tidal and thermal effects at this time. The possible association of the Chelyabinsk object with 86039 (1999 NC43) and 2008 DJ is discussed.