On Sat, 16 Feb 2013 08:57:02 -0800, lal_truckee
wrote:

has any entity attempted to extract a pre-encounter trajectory for the
russian meteorid. is it possibly a sputnik of the close encounter asteroid?

The orbital elements of the meteor have been determined with
reasonable accuracy. It was not space junk, and it was unrelated to
DA14 (the two had very different orbits).