# SuperSTAR Accelerometer
*sensor . products*

Electrostatic accelerometer class used on GRACE and GRACE-FO to observe non-gravitational spacecraft acceleration for gravity-field processing.

## Specifications
- **manufacturer**: onera
- **product status**: operational
- **deployment context**: orbital
- **sensor**: {"instrument_family":"gravimeter","gravimeter_principle":"accelerometer-gnss","notes":"GRACE used onboard accelerometers for non-gravitational force correction. GRACE-FO carries three-axis electrostatic accelerometers developed by ONERA and similar to the SuperSTAR accelerometers flown on GRACE."}
- **entity type**: sensor
- **last verified date**: 2026-06-08
- **verified by**: agency-doc
- **claim status**: agency-sourced
- **provider**: onera
- **attributes**: {"kind":"sensor","manufacturer":"onera","product_status":"operational","deployment_context":"orbital","description":"Electrostatic accelerometer class used on GRACE and GRACE-FO to observe non-gravitational spacecraft acceleration for gravity-field processing.","sensor":"{\"instrument_family\":\"gravimeter\",\"gravimeter_principle\":\"accelerometer-gnss\",\"notes\":\"GRACE used onboard accelerometers for non-gravitational force correction. GRACE-FO carries three-axis electrostatic accelerometers developed by ONERA and similar to the SuperSTAR accelerometers flown on GRACE.\"}"}
- **relevance**: in-scope

## Editorial
SuperSTAR Accelerometer represents the electrostatic accelerometer class flown on GRACE and closely related accelerometers flown on GRACE-FO. These instruments measure non-gravitational acceleration on each spacecraft so atmospheric drag and solar radiation pressure can be removed from gravity solutions [^podaac-grace][^gracefo-spacecraft]. GRACE-FO uses three-axis electrostatic accelerometers developed by ONERA and similar to the SuperSTAR units flown on GRACE [^gracefo-spacecraft].

## Compositional position
- grace (missions) --[mission_payloads]--> SuperSTAR Accelerometer
- grace-fo (missions) --[mission_payloads]--> SuperSTAR Accelerometer

## Sources
- [podaac-grace] | Gravity Recovery and Climate Experiment, PO.DAAC | https://podaac.jpl.nasa.gov/GRACE | tier=agency-doc | accessed=2026-06-08
- [gracefo-spacecraft] | GRACE-FO spacecraft and instruments, NASA JPL | https://www.jpl.nasa.gov/news/press_kits/grace-fo/mission/spacecraft/ | tier=agency-doc | accessed=2026-06-08

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Source: https://eo-atlas.org/products/sensor/superstar-accelerometer
Maintainer: SpectraWorks B.V. (CC-BY 4.0)