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Active Cavity Irradiance Monitor Satellite

The Active Cavity Irradiance Monitor Satellite (ACRIMSAT) was a NASA Earth-orbiting mission that measured total solar irradiance to extend a continuous record of the Suns energy reaching Earth and support climate and solar-physics research.

Active Cavity Irradiance Monitor Satellite
NASA · NASA identifies PIA18157 as an ACRIMSAT spacecraft artist concept and credits NASA. NASA content generally is not subject to copyright in the United States and may be used for factual or informational purposes under NASA Images and Media Usage Guidelines with NASA attribution and no implied endorsement; NASA insignia, logotypes, protected marks, and any separately identified third-party content remain excluded. · Source
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Identity

Aliases
ACRIMSATAcrimSatACRIM IIIActive Cavity Irradiance Monitor Satellite
Name
Active Cavity Irradiance Monitor Satellite
Status
completed

Details

Astronauts
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Description
The Active Cavity Irradiance Monitor Satellite (ACRIMSAT) was a NASA Earth-orbiting mission that measured total solar irradiance to extend a continuous record of the Suns energy reaching Earth and support climate and solar-physics research.
Destination
Near-polar low Earth orbit at approximately 700 km altitude and 98° inclination for continuous total solar irradiance measurements
End Date
2013-12-14
Outcome
ACRIMSAT operated for 14 years, extending the long-term total-solar-irradiance record and providing data used in climate models and solar-physics studies before contact was lost in December 2013.
Programs
Start Date
1999-12-21
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Links

Official Url
https://science.nasa.gov/mission/acrimsat/

Assets & Meta

Creation Time
August 14, 2026 at 18:54:58 UTC
Updated Time
August 22, 2026 at 13:03:40 UTC
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