From Heavens-Above.com...
Cosmos 2251- Information:
Identification
USSPACECOM Catalog No.: 22675
International Designation Code: 1993-036-A
Satellite Details
Orbit: 767 x 803 km, 74.0°
Intrinsic brightness (Mag): 6.3 (at 1000km distance, 50% illuminated)
Maximum brightness (Mag): 5.1 (at perigee, 100% illuminated)
Launch
Date (UTC): June 16, 1993
Cosmos 2251 orbit:
http://heavens-above.com/orbit.aspx?satid=22675&lat=0&lng=0&loc=Unspecified&alt=0&tz=CET
Heavens-Above.com | Cosmos 2251:
http://heavens-above.com/satinfo.aspx?lat=0&lng=0&alt=0&loc=Unspecified&TZ=CET&SatID=22675
Iridium satellites and “Iridium Flares”:
http://heavens-above.com/iridiumhelp.asp?lat=0&lng=0&alt=0&loc=Unspecified&TZ=CET
Heavens-Above.com Home:
http://heavens-above.com/
Again from heavens-above.com:
http://heavens-above.com/
Satellite collision:
At 16:56 UTC on Feb. 10th, Iridium 33 and Cosmos 2251 collided over northern Siberia.
Many hundreds of pieces of debris are expected to result, and many are already being tracked.
The threat to the ISS and Shuttle are minimal, but the danger to other satellites in higher orbits is still being assessed. Please follow these two links for 3-D graphic displays of the collision by Dan Deak.
View from above:
http://www.obsat.com/images/Ir33coll_top.gif
View from the side:
http://www.obsat.com/images/Ir33coll_side.gif