LP Crustal Magnetic Field Data (DATAL2, Level 2)

DATAL2 – LP Crustal Magnetic Field Data Collection

Instrument: Magnetometer

PDS Data Set ID: LP-L-MAG-4-LUNAR-FIELD-TS-V1.0DOI: 10.17189/1519723

PDS4 Collection: urn:nasa:pds:lp-mag-calibrated:data-lunarfieldDOI: 10.17189/fp3b-sp71

For more information about MAG DATAL2 products, see the Lunar Prospector Magnetic Field Vector Components Data Description.

The Lunar Prospector Magnetometer (LP-MAG) Level 2 Data (DATAL2) data products are selected and filter time series data at 5 second intervals. These data represent approximate measurements of the lunar crustal magnetic field with external (solar wind and magnetospheric) fields removed or minimized. Latitude/longitude coverage is limited to specific regions overpassed by the spacecraft during the selected intervals. Vector magnetic field components are given in two coordinate systems: selenographic (SG) coordinates, and east, north, and radial (ENR) coordinates.

The measured parameters consist of the three vector components of the lunar crustal magnetic field in SG and ENR coordinates sampled at 5-second intervals. The units of the field measurements are nanoTestas (nT). 1 nT = 0.00001 Gauss. SG coordinates is a system centered in the Moon with X directed toward 0 N, 0 E, Z directed toward the north selenographic pole, and Y directed toward 0 N, 90 E. ENR coordinates are centered at the instantaneous spacecraft location with X directed eastward, Y directed northward, and Z directed radial to the moon.

MAG DATAL2 products have the following file names:

yy_ddd_nnx.TAB (with detached PDS label)

where:

yy = 2-digit year of data collection

ddd = 3-digit day of data collection

nn = 2-digit orbit number on the selected day

x = optional letter to distinguish multiple files in one day

In ODE, DATAL2 products have the following product IDs:

YY_DDD_NNX