Deep Space Atomic Clock
The Deep Space Atomic Clock (DSAC) is a miniaturized, ultra-precise mercury-ion atomic clock for precise radio navigation in deep space. It is orders of magnitude more stable than existing navigation clocks, and has been refined to limit 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. It is expected to improve the precision of deep space navigation, and enable more efficient use of tracking networks. The project is 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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| Mission duration | Planned: 1 year
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SPACECRAFT PROPERTIES
| Spacecraft | Orbital Test Bed (OTB)
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| Manufacturer | JPL
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| Dimensions | 29 × 26 × 23 cm
(11 × 10 × 9 in) |
EXPEDITION
CREW
START OF MISSION
| Launch date | 25 June 2019
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| Launch site | LC-39A, Kennedy Space Center
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END OF MISSION
ORBITAL PARAMETERS
PAYLOAD
| Mass | 17.5 kg (39 lb)
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MAIN TELESCOPE
TRANSPONDERS
Contributors
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