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The rocket was launched from Baikonur Cosmodrome in Kazakhstan on December 26, 2017, carrying AngoSat 1 Communications Satellite.In 2016, three very similar objects landed all at once in Vietnam - loud booms were also reported in that case. In 2015, about 6 such objects fell to the ground in Spain. And in 2011, another metal sphere fell in Namibia.
The SL-23 rocked body (international designation 2017-086D) re-entered Earth's atmosphere at 23:32 UTC on January 27, 2018, providing a rare opportunity to witness a rocket body slowly burning out in the atmosphere.
Comment: A mysterious house-shaking boom was reported by residents in central Oklahoma (including Oklahoma City) on February 5th:
'It was loud!' Mysterious boom, shock wave rattles homes in central Oklahoma