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GROUP-C (GPS Radio Occultation and Ultraviolet Photometer on a Cubesat) was planned a 3U CubeSat to acquire ionospheric occultations and measurements of ultraviolet airglow on the Earth's disk from a small spacecraft.

The data gained from GROUP-C will be used to support improvements to the ionospheric models and predicted impacts on radio-based technology systems. A secondary objective is to provide data as a validation point for Defense Meteorological Satellite Program ionospheric data.

GROUP-C's payload consists of Space environment sensors - an Ultraviolet photometer and a GPS receiver.

Apparently GROUP-C as a CubeSat freeflyer has been cancelled and converted into an experiment hosted on the ISS attached STP-H5 payload.

Nation: USA
Type / Application: Science, Ionosphere
Operator: Naval Research Lab (NRL)
Contractors: Naval Research Lab (NRL)
Configuration: CubeSat (3U)
Propulsion: None
Power: Solar cells, batteries
Mass: 4 kg
Satellite COSPAR Date LS Launch Vehicle Remarks
GROUP-C - cancelled (via NASA ELaNa program) with ?

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