Limits RegistryPUBLIC RECORD
Limits RegistryPSR J1748-2446ad, a millisecond pulsar in the globular cluster Terzan 5, spins at 716 rotations per second (about 43,000 rpm) — the fastest rotation rate confirmed for any pulsar, found with the Green Bank Telescope in 2004 and confirmed in 2006. At its equator the neutron star's surface is estimated to be moving at roughly a quarter of the speed of light.
The question, scope, and sources behind this Registry record.
PSR J1748-2446ad, a millisecond pulsar in the globular cluster Terzan 5, spins at 716 rotations per second (about 43,000 rpm) — the fastest rotation rate confirmed for any pulsar, found with the Green Bank Telescope in 2004 and confirmed in 2006. At its equator the neutron star's surface is estimated to be moving at roughly a quarter of the speed of light.
The highest confirmed rotation rate of any known pulsar, in complete rotations per second.
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Current frontiers derived from accepted Claims.
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The frontier as it changed over time.
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1 accepted Claim, with 1 linked evidence records.
Permanent ID limitsregistry.com/limits/LR-FASTEST-SPINNING-PULSAR
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Limits Registry. LR-FASTEST-SPINNING-PULSAR. Fastest-spinning pulsar known. 2026.