urn:nasa:pds:lro_radioscience:spice_kernels:lro_es_152_grgm1200b_l600.bsp 1.0 1.17.0.0 Product_SPICE_Kernel 2026-01-21 1.0 Initial PDS4 version 2025-05-02T19:44:00Z 2025-05-29T22:06:00Z Observation Geometry Derived Lunar Reconnaissance Orbiter Mission urn:nasa:pds:context:investigation:mission.lunar_reconnaissance_orbiter data_to_investigation Lunar Reconnaissance Orbiter Host urn:nasa:pds:context:instrument_host:spacecraft.lro is_instrument_host Moon Satellite urn:nasa:pds:context:target:satellite.earth.moon data_to_target V1.0 FIFTH EXTENDED SCIENCE MISSION NASA/GODDARD SPACE FLIGHT CENTER lro_es_152_grgm1200b_l600.bsp 2026-01-21T10:51:34 0 SPICE A SPICE kernel file contains spacecraft and target ephemeris data, providing the position and velocity of the spacecraft as a function of time. This ephemeris is incorporated into geolocated LOLA data products. This reconstructed SPICE kernel is based on a lunar gravity field solution in spherical harmonics to degree and order 1200 with a power law constraint applied when the degree exceeds 600 [LEMOINEETAL2014]. The model, GRGM1200B, and the kernel files are developed by Erwan Mazarico and Gael Cascioli of the LOLA Precision Orbit Determination team (POD) at NASA Goddard Space Flight Center. This reconstruction refines the trajectory of the spacecraft and improves the Lunar Gravity field based on LRO tracking data. For general information on SPK formats and tools, please visit http://naif.jpl.nasa.gov. SPK Binary