I believe this was the ROSAT. NASA say it's down.
Defunct German space telescope ROSAT completes death plunge back to Earth | NASASpaceFlight.com
Interest was high in ROSAT due to its primary mirror, which held the potential of surviving the break up of the spacecraft in the atmosphere during entry. So far, no reports of debris hitting the ground have been reported.
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Weighing roughly 400 kg, this mirror was made of high-temperature resistant materials, namely glass ceramics, which led to engineers noting it had the potential to survive entry, thus becoming a threat to land.
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Although the precise area where ROSAT finally succumbed to Entry has yet to be accurately plotted, the German Aerospace Center (DLR) have noted that Entry will have occurred between 01:45 GMT and 02:15 GMT on Sunday morning.
Scientist says falling German satellite must have crashed into SE-Asia, no debris reported yet - The Washington Post
Scientist says falling German satellite must have crashed into SE-Asia, no debris reported yet
A defunct German research satellite crashed into Earth on Sunday somewhere in Southeast Asia and several parts must have survived re-entering the atmosphere before hitting the surface at a speed of up to 280 mph (450 kph), scientists said.
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The satellite used to circle the planet in about 90 minutes, and it may have traveled several thousand kilometers during the time window of its estimated re-entry into the atmosphere, rendering exact predictions of where it must have crashed difficult.
Looks like you might out run it if you see it heading your way :-)