This display updates every minute. A 48-hour plot is also available.
The display shows the ACE Real Time Solar Wind (RTSW) data received and processed by SWPC as a function of time. It indicates the currency of the ACE RTSW data and the total temporal coverage achieved by the network. Data received from each ground system in the RTSW tracking partnership are displayed in their respective panels with the total tracking coverage shown at the bottom.
The RTSW ground system partnership consists of:
- National Institute of Information and Communications Technology (NICT) in Tokyo, Japan
- Korean Space Weather Center (KSWC) in Jeju, Korea
- German Aerospace Center (DLR) from Neustrelitz, Germany
- NASA's Deep Space Network (NASA)
- NOAA's Wallop Command and Data Acquisition (WCDA) station at Wallop's Island, VA
- NOAA's Space Weather Prediction Center (BOU) in Boulder, CO
- United States Air Force (USAF) stations within the Air Force Satellite Control Network
- UNK (unknown) indicates a new, unassociated tracking station identifier. New identifiers are usually assigned within a few days.
To an observer looking up from the Earth ACE appears to slowly circle the Sun as it follows its orbit around the L1 libration point, about 1.5 million kilometers out from the Earth on the Earth-Sun line. To obtain continuous data from ACE, SWPC relies on a network of ground tracking stations located at various sites around the world. All stations, except for Boulder, use at least a 10 meter diameter parabolic antenna to receive the extremely weak S band radio telemetry signals from the 5 watt transmitter on the ACE spacecraft.
NOAA / Space Weather Prediction Center
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