Link between the potentially hazardous asteroid (86039) 1999 NC43 and the Chelyabinsk meteoroid tenuous

Vishnu Reddy, David Vokrouhlický, William F. Bottke, Petr Pravec, Juan A. Sanchez, Bruce L. Gary, Rachel Klima, Edward A. Cloutis, Adrián Galád, Tan Thiam Guan, Kamil Hornoch, Matthew R.M. Izawa, Peter Kušnirák, Lucille Le Corre, Paul Mann, Nicholas Moskovitz, Brian Skiff, Jan Vraštil

Icarus, doi:10.1016/j.icarus.2015.01.006
Icarus 2015 volume 252 pages 129 to 143
available online 17 January 2015

UPDATE (18 Feb 2015):

PDF LINK (full text)

LINK