PSR J1748-2446ad

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The globular cluster Terzan 5

PSR J1748-2446ad is the fastest known spinning pulsar, at 716 Hz, the period being 0.00139595482(6) seconds. The previous record was held by PSR J1939+2134, discovered in 1982, spinning at 642 Hz. The pulsar is located in the globular cluster Terzan 5.