The scientists figured it all out.


A circular hole in the ice of Chebarkul Lake, where the Chelyabinsk meteor reportedly struck on Feb. 15.

"Using the footage (click here) and the location of an impact into Lake Chebarkul, Jorge Zuluaga and Ignacio Ferrin, from the University of Antioquia in Medellin, were able to use simple trigonometry to calculate the height, speed and position of the rock as it fell to Earth.

"To reconstruct the meteor's original orbit around the sun, they used six different properties of its trajectory through Earth's atmosphere. Most of these are related to the point at which the meteor becomes bright enough to cast a noticeable shadow in the videos."

Now, I stated the day the 'fly by' occurred the asteroids that fell out of the sky were due to that fly by. I still believe that. The fly by was close enough to cause shifts (oscillations) in gravity of all the bodies in the area. The larger the bodies the less they were effected by any oscillation. But, the smaller ones in the area, in this case along the Apollo asteroid belt, would have been destabilized and would have had their trajectory effected. The fact we have these asteroids in the region of Earth frequently, it all fits together. The only thing unrelated between the near Earth asteroid and the ones that fell out of the sky is that they are in different orbits. Orbits don't matter if their come near each other or collide.

The Apollo asteroids (click here) are a class of asteroids with Earth-crossing orbits. The first Apollo asteroid was discovered in 1918 by Max Wolf observing from Heidelberg, Germany. A table of large Apollo asteroids is contained in Sky & Telescope (March 1990). There are 240 known Apollos (Minor Planet Center), but it is believed that there are at least 2000 Earth-crossers with diameters of 1 km or larger, 100,000 larger than the Rose Bowl, and 70-80 million larger than a typical house (Ostro 1997). One of the largest Apollos is Geographos, which is 5.1 X 1.8 km in size and was discovered in 1951 as part of the Palomar Observatory Sky Survey (sponsored by the National Geographic Society, hence the asteroid's name).