If rumors about 2499 is true, it was a satellite built to intercept and destroy other satellites.
So, it is possible that it even was not Cosmos-2499 that break into pieces. Really we would have some glue if some other satellite will break into pieces suddenly. Meanwhile, NORAD can't really track maneuvering sats, it needs few passes on stable orbit to find out new sat orbit parameters. Who knows, may be we already have space war.
If rumors about 2499 is true, it was a satellite built to intercept and destroy other satellites.
So, it is possible that it even was not Cosmos-2499 that break into pieces. Really we would have some glue if some other satellite will break into pieces suddenly. Meanwhile, NORAD can't really track maneuvering sats, it needs few passes on stable orbit to find out new sat orbit parameters. Who knows, may be we already have space war.