Resumen de Russian meteor traced back to parent asteroid
A new study shows how a 200-meter-wide rock, first spotted in 2011, could have spawned the Chelyabinsk meteor that exploded over Russia on Feb 15. Carlos de la Fuente Marcos and his brother Raul, both at the Complutense University of Madrid, Spain, are pointing the finger at asteroid 2011 EO40. Roughly 200 meters wide, it is a rock previously listed as potentially hazardous by the International Astronomical Union's Minor Planet Center in Cambridge MA. The pair used a computer simulation to create hypothetical orbital paths around the sun that would have intersected with Earth on Feb 15. Then they searched a database of known asteroids for ones that could have produced rocks that follow those orbits. The closest match was with 2011 EO40.
