Lunar Prospector Electron Reflectometer Calibrated Data Bundle Readme
1998-01-16 to 1999-07-29
Planetary Plasma Interactions Discipline Node
of the
Planetary Data System
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Introduction
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This bundle contains data from the Lunar Prospector Electron Reflectometer
(ER) Calibrated data set. It contains all of the 3-D, high and low resolution
omni-directional electron flux data from 1998-01-16 to 1999-07-29.
This bundle is organized into several collections, including:
data-3deleflux, data-3deleflux-anc, data-highresflux, data-highresflux-anc,
data-lowresflux, data-lowresflux-anc and document. PDS4 documentation is in
all XML. There is an XML label for every product in the archive.
This bundle is intended for the use of scientists and students in the study
of solar wind and planetary energetic and neutral particles. The data may be
used for research and publication.
This bundle was migrated to PDS4 from the PDS3 data sets:
LP-L-ER-3-RDR-3DELEFLUX-80SEC-V1.1 (https://doi.org/10.17189/v5jt-7e96),
LP-L-ER-3-RDR-HIGHRESFLUX-V1.1 (https://10.17189/r676-qh94),
LP-L-ER-4-SUMM-OMNIDIRELEFLUX-V1.1 (https://10.17189/6141-xx15).
These data sets were originally archived under PDS3 in the following volumes:
LP_1201, LP_1202, LP_1203.
This bundle complies with Planetary Data System 4 (PDS4) standards.
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Brief Bundle Description
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Lunar Prospector (LP) was a simple spin-stabilized spacecraft with a nominal
spin period of 5 seconds, operating in a circular, polar orbit around the
Moon. The orbit during the Primary Mission had a 118 minute period and
average altitude of about 100 km. The Primary Mission lasted for one year
starting on January 16, 1998 and ending on January 16, 1999. The spacecraft
orbit was then lowered to about 30 km to acquire higher resolution data during
a 6-month Extended Mission. The Extended Mission began on January 16, 1999
and was completed on July 31, 1999. The mission ended when the spacecraft
impacted into the surface of the Moon.
The science goals of LP were to map the Moon's surface composition and its
magnetic and gravity fields, to determine the frequency and location of gas
release events, and to search for polar ice deposits. To meet these
objectives, LP had five science instruments, housed on three booms: a gamma
ray spectrometer, a neutron spectrometer, an alpha particle spectrometer, a
magnetometer, and an electron reflectometer. In addition, a gravity
experiment used Doppler tracking data to derive gravity measurements.
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Errata
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Two errors were produced when validation was ran for the Lunar Prospector
Electron Reflectometer Calibrated Data.
These errors were found in TAB files for the 3deleflux, highresflux and
lowresflux. These errors were not consistent with the flagged values
delivered by the instrument team.
Both errors have since been resolved by altering the data to pass validation.
For more information reference the tab_corrections.txt document found in the
document-er-calibrated directory.
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Contacts
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This bundle was produced for the Planetary Data System (PDS) at the Planetary
Plasma Interactions (PPI) node.
For questions or problems regarding this bundle, please contact the PDS/PPI
operator:
Email pds_operator@igpp.ucla.edu
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