
Originally Posted by
Texpat
Very difficult to determine where space junk will land.
These satellites are just above the Earth's atmosphere. If the Earth were a peach, for example, optical satellites sit on top of the fuzz.
It's orbital plane is far more critical than the approach angle to the atmosphere in determining where it might land. If the satellite is completely dead, it's just a matter of where in it's orbit gravity catches it as it slips closer to Earth.
There are essentially four types of orbits, equatorial, polar, prograde (travelling in the direction the Earth spins) and retrograde (travelling against the spin).
Optical sensing satellites are usually low-Earth geosynchronous which means they cover a lot of ground -- more difficult to peg than the staring variety.
Seventy five percent of the planet is water so a random sample would see 3 out of four not even hit land, assuming it remains relatively intact.
I am for more worried about driving to the market to buy a fish tomorrow.