A 2007 study suggested that the bolide may have been a piece of a much larger asteroid that broke up in a collision and also produced 298 Baptistina, 160 million years ago. The results of this study were disproven in 2011 using data from the Wide-field Infrared Survey Explorer (WISE). This data revised the date of the collision which created the Baptistina family to about 80 million years ago. 