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