urn:nasa:pds:clementine1_gravity_and_topography:gravity_data:glgm2sh 1.0 1.19.0.0 Product_Observational 2023-02-12 1.0 PDS4 migrated product. Deep Space Program Science Experiment Mission urn:nasa:pds:context:investigation:mission.deep_space_program_science_experiment data_to_investigation Clementine 1 Clementine 1 Host urn:nasa:pds:context:instrument_host:spacecraft.clem1 is_instrument_host Radio Science Subsystem Instrument urn:nasa:pds:context:instrument:clem1.rss is_instrument Moon Satellite urn:nasa:pds:context:target:satellite.earth.moon data_to_target glgm2sh.tab This file contains coefficients for a spherical harmonic model of the Moon's gravity field. The Clementine gravity model is known as the Goddard Lunar Gravity Model 2 (GLGM-2). This is a 70th-degree and -order model. The gravity solution is based on Doppler tracking of Lunar Orbiters 1 to 5, the Apollo-15 and Apollo-16 subsatellites, and the Clementine spacecraft. The data were processed in 392 arcs, and 708,854 observations contributed to this solution, of which 361,794 were provided by Clementine. The solution was calibrated by the use of subset solutions, as described in Lerch (Bulletin Geodesique, v. 65, p. 44-52, 1991), in order to obtain a more realistic estimate of the gravity field error. The planetary gravitational constant, or GM for this solution is 4902.80295 +/- 0.00224 km^3/sec^2, and the reference equatorial radius is 1738.0 km. 0 2553 The GLGM-2 table contains the coefficients for the spherical harmonic model. Each row in the table contains the degree index m, the order index n, the coefficients Cmn and Smn, and the uncertainties in Cmn and Smn. The (delimited) data require 77 ASCII characters; these are followed by a pad of 1 unspecified ASCII character, an ASCII carriage-return, and an ASCII line-feed. Carriage-Return Line-Feed 6 0 80 coefficient degree 1 1 ASCII_Integer 3 The degree index m of the C and S coefficients in this record. coefficient order 2 5 ASCII_Integer 3 The order index n of the C and S coefficients in this record. C 3 9 ASCII_Real 20 The coefficient Cmn for this spherical harmonic model. S 4 30 ASCII_Real 20 The coefficient Smn for this spherical harmonic model. C uncertainty 5 51 ASCII_Real 13 The uncertainty in the coefficient Cmn for this spherical harmonic model. S uncertainty 6 65 ASCII_Real 13 The uncertainty in the coefficient Smn for this spherical harmonic model. glgm2sh.lbl 0 PDS3 Original PDS3 label Carriage-Return Line-Feed