urn:nasa:pds:lp_rs_jpl_gravity_derived:data_image:jbl070d1_img 1.0 1.14.0.0 Product_Observational 2021-01-12 1.0 PDS4 migrated product. 1998-01-11T12:20:00.000Z 1998-02-17T04:00:00.000Z 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 Image_Object display_settings_to_array Sample Left to Right Line Top to Bottom Image_Object cartography_parameters_to_image_object 0.0 360.0 90.0 -90.0 Equirectangular 0.0 0.0 -0.5 Coordinate Pair 30.33382 30.33382 1.0 1.0 -5460087.60 2730043.80 Planetocentric 1738.0 1738.0 1738.0 Positive East jbl070d1.img 1998-03-11T00:00:00 This file contains a digital map of lunar Bouguer vertical gravity anomaly derived from radio tracking of the Lunar Prospector spacecraft. The observation is Bouguer vertical gravity in milligals at the surface referenced to a sphere of 1738.0 km radius. The Bouguer anomaly is the observed gravity as given by the indicated gravity model minus the theoretical gravity from the topography model. A crustal density of 2.8 and mean density of 3.34 gm/cm^3 are used together with the GLTM-2C 90th degree and order topography model (Smith et. al., 1997, Topography of the Moon from the Clementine Lidar, Journal of Geophysical Research, 102, 1591-1611) to determine the theoretical gravity. The degree one terms are not included and there is no correction for maria fill. The method of computing the theoretical gravity of a topography model was done by expanding in powers (Wieczorek and Phillips, 1998, Potential Anomalies on a Sphere: Applications to the Lunar Crust, Journal of Geophysical Research, 103, 1715-1724). The anomaly may be from a truncation in degree of a delivered gravity field. The naming convention for the degree used is, e.g., JBL070D where 70 indicates the maximum degree of the gravity field used to create the map. The map is produced by the LP Gravity Science Team at JPL under the direction of A.S. Konopliv. Image_Object 0 2 Last Index Fastest IEEE754MSBDouble milligals Line 180 1 Sample 360 2 jbl070d1.lbl 0 PDS3 Original PDS3 label Carriage-Return Line-Feed