urn:nasa:pds:context:node:node.naif 1.0 1.7.0.0 Product_Context naif 2016-10-01 1.0 extracted metadata from PDS3 catalog and modified to comply with PDS4 Information Model urn:nasa:pds:context:personnel:personnel.charles_acton::1.0 node_to_manager urn:nasa:pds:context:personnel:personnel.charles_acton::1.0 node_to_operator urn:nasa:pds:context:personnel:personnel.charles_acton::1.0 node_to_data_archivist urn:nasa:pds:context:agency:agency.nasa::1.0 node_to_agency urn:nasa:pds:context:personnel:personnel.charles_acton::1.0 node_to_personnel urn:nasa:pds:context:personnel:personnel.nathaniel_bachman::1.0 node_to_personnel urn:nasa:pds:context:personnel:personnel.boris_semenov::1.0 node_to_personnel urn:nasa:pds:context:personnel:personnel.edward_wright::1.0 node_to_personnel Navigation and Ancillary Information Facility Jet Propulsion Laboratory Responsible for development and implementation of the SPICE system---a means for providing ancillary observation geometry data needed to aide in the interpretation of science instrument data sets returned from planetary spacecraft. SPICE data sets, called kernels, exist for spacecraft trajectory (S), planet and satellite ephemerides and associated physical and cartographic constants (P), instrument descriptions, including mounting alignment and internal timing descriptions (I), orientation as a function of time of any spacecraft structure upon which science instruments are mounted (C); and spacecraft and ground data system events, both planned and unplanned (E). The NAIF node also provides users a portable Fortran 77 software source code toolkit, called SPICELIB, which contains readers for each of the SPICE kernels, plus a wide assortment of geometry, math, and utility software useful in computing instrument observation geometry parameters such as range, optic axis intercept latitude and longitude, and phase, incidence and emission angles.