Keeping track of it as its orbit decays:
When and where will it hit the Earth ?
This is the question which interests most people, and unfortunately very difficult to answer. The satellite is being slowed down by friction with the tenuous upper atmosphere and losing height steadily, as can be seen in the plot below, which shows the orbital height over the last year. As it sinks further, the atmospheric density increases and so does the friction, making the descent faster and faster. Re-entry will happen when the height reaches about 100km.
What are the risks ?
Fortunately, the risk to people on the ground is extremely low. The Earth is large and two-thirds of it is covered by ocean. Most of the satellite will burn up in the upper atmosphere, but a few large pieces are expected to survive the re-entry and fall to Earth. It would be very unlikely for any of them to hit someone.
Where is USA 193 now ?
You can see the current position in the ground track below.
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