urn:nasa:pds:lp_rs_jpl_gravity_derived:data_sha:jgl075d1_sha 1.0 1.14.0.0 Product_Observational 2021-01-12 1.0 PDS4 migrated product. Lunar Prospector Mission urn:nasa:pds:context:investigation:mission.lunar_prospector data_to_investigation Lunar Prospector Host urn:nasa:pds:context:instrument_host:spacecraft.lp is_instrument_host Radio Science Subsystem Instrument urn:nasa:pds:context:instrument:lp.rss is_instrument Moon Satellite urn:nasa:pds:context:target:satellite.earth.moon data_to_target jgl075d1.sha 1998-03-11T00:00:00 This file contains coefficients and related data for the LP75D Spherical Harmonic model of the Moon's gravity field. Input data are from radio tracking of the Lunar Orbiter 1 to 5, Apollo 15 and 16 subsatellites, Clementine, and the first month (to Feb. 17, 1998) of Lunar Prospector spacecraft. This product is a set of two ASCII tables: a header table and a coefficients table. Definitions of the tables follow. The Lunar Prospector Lunar gravity model is known as the Spherical Harmonics Gravity ASCII Data Record (SHGADR) and is produced by the Lunar Prospector Gravity Science Team at JPL under the direction of A.S. Konopliv. SHADR Header Table 0 1 The SHADR header includes descriptive information about the spherical harmonic coefficients that follow in SHADR Coefficients Table. The header consists of a single record of eight (delimited) data columns requiring 137 bytes, a pad of 105 unspecified ASCII characters, an ASCII carriage-return, and an ASCII line-feed. Carriage-Return Line-Feed 8 0 244 reference radius 1 1 ASCII_Real 23 km The assumed reference radius of the spherical planet. constant 2 25 ASCII_Real 23 For a gravity field model the assumed gravitational constant GM in km cubed per second squared for the planet. For a topography model, set to 1. uncertainty in constant 3 49 ASCII_Real 23 For a gravity field model the uncertainty in the gravitational constant GM in km cubed per second squared for the planet (or, set to 0 if not known). For a topography model, set to 0. degree of field 4 73 ASCII_Integer 5 Degree of the model field. order of field 5 79 ASCII_Integer 5 Order of the model field. normalization state 6 85 ASCII_Integer 5 The normalization indicator. For gravity field: 0 coefficients are unnormalized 1 coefficients are normalized 2 other. reference longitude 7 91 ASCII_Real 23 degree The reference longitude for the spherical harmonic expansion; normally 0. reference latitude 8 115 ASCII_Real 23 degree The reference latitude for the spherical harmonic expansion; normally 0. SHADR Coefficients Table 244 2925 The SHADR coefficients 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 107 ASCII characters; these are followed by a pad of 13 unspecified ASCII characters, an ASCII carriage-return, and an ASCII line-feed. Carriage-Return Line-Feed 6 0 122 coefficient degree 1 1 ASCII_Integer 5 Degree index m of the C and S coefficients in this record. coefficient order 2 7 ASCII_Integer 5 Order index n of the C and S coefficients in this record. c 3 13 ASCII_Real 23 Coefficient Cmn for this spherical harmonic model. s 4 37 ASCII_Real 23 Coefficient Smn for this spherical harmonic model. c uncertainty 5 61 ASCII_Real 23 Uncertainty in the coefficient Cmn for this spherical harmonic model. s uncertainty 6 85 ASCII_Real 23 Uncertainty in the coefficient Smn for this spherical harmonic model. jgl075d1.lbl 0 PDS3 Original PDS3 label Carriage-Return Line-Feed