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SPICE
What is SPICE ?
SPICE is a framework to deal with ancillary information of space science data developed by Navigation Ancillary Information Facility (NAIF). The most fundamental ancillary information is clock, trajectory, and orientation of spacecraft. For scientific purpose, planetary constant, trajectories, or rotation are also essential to their analysis. In SPICE, the ancillary data, not only of spacecraft, but also of planetary objects are archived into SPICE specific format, called SPICE kernel(s). There are several types of SPICE kernel: SPK, PcK, IK, CK, DSK, EK, FK, LSK, and SCLK.Japanese planetary exploration missions also publish ancillary data as SPICE kernel. As of December 2022, the SPICE kernel datasets for the following missions are released: Hayabusa, SELENE(Kaguya), Akatsuki(Venus Climate Orbiter; VCO) and Hayabusa2.