On cometary nature of near-Earth asteroid 2003 EH1

1Babadzhanov, PB, 1Kokhirova, GI, 2Obrubov, YV
1Institute of Astrophysics of the Academy of Sciences of the Republic of Tajikistan, Dushanbe, Tajikistan
2Bauman Moscow State Technical University, Moscow, Russia
Kinemat. fiz. nebesnyh tel (Online) 2016, 32(5):60-67
Start Page: Dynamics and Physics of Solar System Bodies
Language: Russian
Abstract: 

The differential orbital evolution of the near-Earth asteroid (NEA) 2003 EH1 and comet 96P/Machholz 1 was investigated under the perturbing action of major planets for the time interval of 28 thousand years. The values of Southworth and Hawkins Dsh criterion of orbital similarity and its variation were calculated over this period. It was shown that comet and asteroid can be fragments of the same larger comet-progenitor of the Quadrantid complex. A break-up of the parent comet occurred possibly near 9500 years ago. The near-Earth object 2003 EH1 is really the dormant fragment of the parent comet’s nucleus. A conclusion was made that comet 96P/Machholz 1, Amore group near-Earth asteroid (186256) 2003 EH1 and Quadrantids meteoroid stream form the complex of related objects.

Keywords: asteroid 2003 EH1, comet, Quadrantids meteoroid stream
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