PDS_VERSION_ID               = PDS3
RECORD_TYPE                  = FIXED_LENGTH
RECORD_BYTES                 = 2880
FILE_RECORDS                 = 180
^IMAGE                       = "JBL090J1.IMG"
INSTRUMENT_HOST_NAME         = "LUNAR PROSPECTOR"
TARGET_NAME                  = "MOON"
INSTRUMENT_NAME              = "RADIO SCIENCE SUBSYSTEM"
DATA_SET_ID                  = "LP-L-RSS-5-GRAVITY-V1.0"
ORIGINAL_PRODUCT_ID          = "LP100J.A01"
PRODUCT_ID                   = "JBL090J1.IMG"
PRODUCT_RELEASE_DATE         = 1999-03-08
DESCRIPTION                  = "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."

START_ORBIT_NUMBER           = 1
STOP_ORBIT_NUMBER            = 4668
START_TIME                   = 1998-01-11T12:20:00.000
STOP_TIME                    = 1999-02-08T06:00:00.000
SOFTWARE_NAME                = "GRVMAP;V1.0"
PRODUCT_CREATION_TIME        = 1999-03-08T00:00:00.000
PRODUCER_ID                  = "LP GRAVSCI TEAM"

OBJECT               = IMAGE
  LINES                      = 180
  LINE_SAMPLES               = 360
  SAMPLE_TYPE                = "IEEE REAL"
  SAMPLE_BITS                = 64
  UNIT                       = "MILLIGALS"
  OFFSET                     = 0.0E+00
  SCALING_FACTOR             = 1.0E+00
  DESCRIPTION                = "The Digital Map contains
values of the Bouguer gravity.  The values can be obtained
by multiplying the sample in the map by SCALING_FACTOR
and then adding OFFSET."
END_OBJECT           = IMAGE

OBJECT               = IMAGE_MAP_PROJECTION
  ^DATA_SET_MAP_PROJECTION     = "DSMAP.CAT"
  COORDINATE_SYSTEM_TYPE       = "BODY-FIXED ROTATING"
  COORDINATE_SYSTEM_NAME       = PLANETOCENTRIC
  MAP_PROJECTION_TYPE          = "SIMPLE CYLINDRICAL"
  A_AXIS_RADIUS                = 1738.0 <KM>
  B_AXIS_RADIUS                = 1738.0 <KM>
  C_AXIS_RADIUS                = 1738.0 <KM>
  FIRST_STANDARD_PARALLEL      = "N/A"
  SECOND_STANDARD_PARALLEL     = "N/A"
  POSITIVE_LONGITUDE_DIRECTION = "EAST"
  CENTER_LATITUDE              = 0.0 <DEGREES>
  CENTER_LONGITUDE             = -0.5 <DEGREES>
  REFERENCE_LATITUDE           = 0.0 <DEGREES>
  REFERENCE_LONGITUDE          = 0.0 <DEGREES>
  LINE_FIRST_PIXEL             = 1
  LINE_LAST_PIXEL              = 180
  SAMPLE_FIRST_PIXEL           = 1
  SAMPLE_LAST_PIXEL            = 360
  MAP_PROJECTION_ROTATION      = 0.0 <DEGREES>
  MAP_RESOLUTION               = 1.0E+00
  MAP_SCALE                    = "N/A"
  MAXIMUM_LATITUDE             = 89.5 <DEGREES>
  MINIMUM_LATITUDE             = -89.5 <DEGREES>
  EASTERNMOST_LONGITUDE        = 179.0 <DEGREES>
  WESTERNMOST_LONGITUDE        = -180.0 <DEGREES>
  LINE_PROJECTION_OFFSET       = 89.5
  SAMPLE_PROJECTION_OFFSET     = 0.0
END_OBJECT           = IMAGE_MAP_PROJECTION

END