Trapped Radiation Detector
Cosmic Ray Telescope
Infrared Radiometer
Charged Particle Instrument
Radioisotope Thermoelectric Generator
Plasma Analyzer
Main Antenna
Imaging Photopolarimeter
Geiger Tube Telescope
Meteoroid Detector Sensor Panel
Helium VectorMagnetometer
Ultraviolet Photometer
Asteroid–MeteoroidDetector Sensor