PDS_VERSION_ID = PDS3 RECORD_TYPE = STREAM OBJECT = TEXT INTERCHANGE_FORMAT = ASCII PUBLICATION_DATE = 2010-06-18 NOTE = "LRO FRAMES Kernel Information" END_OBJECT = TEXT END General Information About SPICE Frames Kernels ============================================== In the SPICE system, FRAMES kernel contains a set of information required to define various frames used in a particular mission, sources of orientation and origin location information for these frames and inter-connections between these frames and other frames supported within the SPICE system. The frame definitions information contained in the file can be utilized in conjunction with other data using the SPICE Toolkit APIs, calls to which can be integrated into user application programs. The information regarding how to obtain the SPICE system toolkit for a number of languages and computer platforms is located in the ``/software'' subdirectory of the main directory of this data set. Refer to the ``frames.req'' document provided with the toolkit to get more information about definition and usage of the frames within the SPICE system. LRO Frames Kernels Contained in This Data Set ============================================= The following Frames Kernel files are included in this data set (only name portion of the file name is shown; the extension of all FK file names is ``.tf''): lro_frames_YYYYDOY_vNN LRO Mission FK files containing the complete set of frame definitions for the spacecraft, the solar array, and high gain antenna and as well as the definitions of the base instrument frames incorporating instrument mounting alignments. YYYYDOY in the file name identifies the file release date; NN identifies the file version. lro_INST_frames_YYYYDOY_vNN LRO instrument FK files containing definitions of additional frames needed to compute observation geometry for a particular instrument. INST in the file name identifies the instrument (crater, dlre, lamp, lola, lend, or lroc); YYYYDOY identifies the file release date; NN identifies the file version. moon_080317 Lunar Reference Frames FK file specifying lunar body-fixed reference frames -- ``Mean Earth'' (ME) and ``Principal Axis'' (PA) frames -- associated with high-accuracy lunar orientation data provided by the JPL Solar System Dynamics Group's planetary ephemerides DE421. moon_assoc_me Lunar Reference Frame Associations moon_assoc_pa FK files are used to associate either ME or PA frame with the Moon. Only one of these kernels needs to be loaded at a time in order for some older SPICE APIs to perform computations in that frame. Neither of these kernels is needed for the latest SPICE APIs. If more than one FK of a particular kind is present in this directory, the FK with the latest release date and version supersedes all FKs with earlier release dates and versions. Kernel File Details =================== The most detailed description of the data in an FK file is provided in metadata included inside the description area of the file. This information can be viewed using any text editor program. Contact Information =================== Regarding Lunar Reconnaissance Orbiter project specific information provided in this data set contact: Rick Saylor (301)-614-1354 Richard.S.Saylor@nasa.gov address: NASA Goddard Space Flight Center (GSFC) Mail Stop 451.0 Building 12 Room N233 Greenbelt MD 20771