摘要
The Damocloids are a group of unusual asteroids that recently added a new member： 2010 EJ104. The dynamical evolution of the Damocloids may reveal a connection from the Main Belt to the Kuiper Belt and beyond the scattered disk. According to our simulations, two regions may be considered as possible origins of the Damocloids： the scattered disk, or a part of the Oort cloud, which will be perturbed to a transient region located between 700 AU and 1000 AU. Based on their potential origin, the Damocloids can be classified into two types, depending on their semi-major axes, and about 65.5% of the Damocloids are classified into type I which mainly originate from the Oort cloud. Whether the Damocloids are inactive nuclei of the Halley Family of Comets may depend on their origin. K
The Damocloids are a group of unusual asteroids that recently added a new member： 2010 EJ104. The dynamical evolution of the Damocloids may reveal a connection from the Main Belt to the Kuiper Belt and beyond the scattered disk. According to our simulations, two regions may be considered as possible origins of the Damocloids： the scattered disk, or a part of the Oort cloud, which will be perturbed to a transient region located between 700 AU and 1000 AU. Based on their potential origin, the Damocloids can be classified into two types, depending on their semi-major axes, and about 65.5% of the Damocloids are classified into type I which mainly originate from the Oort cloud. Whether the Damocloids are inactive nuclei of the Halley Family of Comets may depend on their origin. K
基金
Wang S. is supported by the National Natural Science Foundation of China (Grant Nos. 10925313 and 10833001)
the China Post doctoral Science Foundation (Grant No. 2011M500962)
Z.H.B is supported by the National Natural Science Foundation of China (Grant Nos. 10503013 and 10933004)
J.J.H is grateful for support by the National Natural Science Foundation of China (Grant Nos. 11273068, 10973044 and 10833001)
the Natural Science Foundation of Jiangsu Province (Grant No. BK2009341)
the Foundation of Minor Planets of Purple Mountain Observatory
the innovative and inter disciplinary program by CAS (Grant No. KJZD-EW-Z001)
