CEOS EO HANDBOOK – MISSION SUMMARY - THEMIS -
Full Name Time History of Events and Macroscale Interactions during Substorms Status Operational (extended)
Mission Agencies NASA Launch Date 17 Feb 2007
Mission Links mission site EOL Date Dec 2024
EO Portal Info NORAD Catalog #
International Designator
Orbit Type Highly elliptical Orbit Period
Orbit Sense Orbit Inclination
Orbit Altitude Orbit Longitude
Orbit LST Repeat Cycle
Objectives and Applications Five nearly identical probes which study energy releases in Earth's magnetosphere, known as substorms. In 2010, after the end of THEMIS’ prime mission, two of the spacecraft were repurposed to start a new mission: ARTEMIS. The three remaining THEMIS probes continue to orbit Earth, sending back valuable information to help scientists further understand substorms.
Mission Measurements
Mission Instruments
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