Full Name Community Initiative for Continuing Earth Radio Occultation 10 Status Operational (nominal)
Mission Agencies GeoOptics Launch Date 11 Nov 2018
Mission Links EOL Date Dec 2025
EO Portal Info NORAD Catalog #
International Designator
Orbit Type Sun-synchronous Orbit Period
Orbit Sense Orbit Inclination 85.04 deg
Orbit Altitude 515 km Orbit Longitude
Orbit LST Repeat Cycle
Objectives and Applications CICERO satellites host CION instruments (CICERO Instrument for GNSS-RO) which perform GNSS-RO by sensing radio signals broadcast by GNSS satellites (GPS and Galileo) and measuring the phase delay due to refraction during occultation. Second-generation CICERO-2 satellites (two launched in 2022) carry an improved CION instrument, CION-2, which measures reflected signals from the sea surface and has a polarimetric capability, in addition to GNSS-RO. CION and CION-2 data produce high-accuracy profiles of atmospheric pressure, temperature, and moisture; 3D maps of the electron distribution in the ionosphere; and information on ocean and ice properties.
Mission Measurements
Mission Instruments
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