Deep Space Atomic Clock

The Deep Space Atomic Clock (DSAC) was a miniaturized, ultra-precise mercury-ion atomic clock for precise radio navigation in deep space. DSAC was designed to be orders of magnitude more stable than existing navigation clocks, with a drift of no more than 1 nanosecond in 10 days. It is expected that a DSAC would incur no more than 1 microsecond of error in 10 years of operations. Data from DSAC is expected to improve the precision of deep space navigation, and enable more efficient use of tracking networks. The project was managed by NASA's Jet Propulsion Laboratory and it was deployed as part of the U.S. Air Force's Space Test Program 2 (STP-2) mission aboard a SpaceX Falcon Heavy rocket on 25 June 2019.

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space probe, Falcon Heavy, 

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Deep Space Atomic Clock engineering sample

Deep Space Atomic Clock-DSAC

Deep Space Atomic Clock

Type	Subtype	Date	Description	Notes	Source
commons	image		Deep Space Atomic Clock engineering sample		Commons
commons	image		Deep Space Atomic Clock-DSAC		Commons
commons	image		Deep Space Atomic Clock		Commons