Product_Observational

Identification_Area

logical_identifier

urn:nasa:pds:lp-er-calibrated:data-3deleflux:3d990401

version_id

1.0

title

Lunar Prospector ER 3-D Electron Flux Data for 1999-04-01

information_model_version

1.20.0.0

product_class

Product_Observational

Citation_Information

author_list

Mitchell, David

publication_year

2025

description

This file contains Lunar Prospector omni-directional 3-D electron flux data for 1999-04-01. The data are accumulated over 16 spacecraft spins at 1 day durations in units of particles/cm**2/sec/steradian/eV.

Modification_History

Modification_Detail

modification_date

2025-02-26

version_id

1.0

description

This product, 3D990401.TAB, was originally released as part of the PDS3 LP-L-ER-3-RDR-3DELEFLUX-80SEC-V1.1 data set. The metadata have been migrated to PDS4. The data themselves are unchanged, with the exception to the error described below. Some TAB files, in this collection, have been altered to account for erroneous data values found in the 88 electron flux and phi values. The original, respective flagged values delivered by the instrument team are denoted as: missing_constant = 9.999E-99 missing_constant = 999.99 The erroneous values have been flagged by the PPI node denoted as: error_constant = -9.99E-99 invalid_constant = 998.99

Observation_Area

Time_Coordinates

start_date_time

1999-04-01T00:00:36Z

stop_date_time

1999-04-01T23:59:57Z

Primary_Result_Summary

purpose

Science

processing_level

Calibrated

description

Lunar Prospector omni-directional 3-D electron flux data

Science_Facets

discipline_name

Particles

facet1

Electrons

facet2

Plasma

Investigation_Area

name

Lunar Prospector

type

Mission

Internal_Reference

lid_reference

urn:nasa:pds:context:investigation:mission.lunar_prospector

reference_type

data_to_investigation

Observing_System

Observing_System_Component

name

Lunar Prospector

type

Host

Internal_Reference

lid_reference

urn:nasa:pds:context:instrument_host:spacecraft.lp

reference_type

is_instrument_host

Observing_System_Component

name

Electron Reflectometer

type

Instrument

Internal_Reference

lid_reference

urn:nasa:pds:context:instrument:lp.er

reference_type

is_instrument

Target_Identification

name

Moon

type

Satellite

Internal_Reference

lid_reference

urn:nasa:pds:context:target:satellite.earth.moon

reference_type

data_to_target

Discipline_Area

Mission_Information

mission_phase_name

Extended Mission

Particle_Observation

Particle_Parameter

particle_type

Electrons

particle_measurement_type

Energy Flux

Reference_List

Internal_Reference

lidvid_reference

urn:nasa:pds:lp-er-calibrated:data-3deleflux-anc:outages::1.0

reference_type

data_to_ancillary_data

Internal_Reference

lidvid_reference

urn:nasa:pds:lp-er-calibrated:data-3deleflux-anc:theta::1.0

reference_type

data_to_ancillary_data

Internal_Reference

lidvid_reference

urn:nasa:pds:lp-mager-derived:data-moon-pos:moon_pos::1.0

reference_type

data_to_ancillary_data

Internal_Reference

lidvid_reference

urn:nasa:pds:lp-mager-derived:data-spacecraft-pos:pos99_04::1.0

reference_type

data_to_ancillary_data

Internal_Reference

lidvid_reference

urn:nasa:pds:lp-er-calibrated:document:errata::1.0

reference_type

data_to_document

External_Reference

reference_text

Binder, A.B., Feldman, W.C., Konopliv, A.S., Lin, R.P., Acuna, M.H., Hood, L.L., and Guinness, E.A., LP MOON SPACECRAFT ATTITUDE V1.0, LP-L-ENG-6-ATTITUDE-V1.0, NASA Planetary Data System, 1998.

description

The Lunar Prospector Attitude data set consists of monthly values for the spacecraft spin rate and spin axis orientation (attitude) as a function of time located in the respective ATTITUDE.TAB.

External_Reference

reference_text

Binder, A.B., Feldman, W.C., Konopliv, A.S., Lin, R.P., Acuna, M.H., Hood, L.L. and Guinness, E.A., LP MOON UPLINK COMMAND V1.0, LP-L-ENG-6-COMMAND-V1.0, NASA Planetary Data System, 1998.

description

The Lunar Prospector Command data set contains commands sent to the spacecraft through one of the Deep Space Network ground stations located in: C9910427.TAB

External_Reference

reference_text

Binder, A.B., W.C. Feldman, A.S. Konopliv, R.P. Lin, M.H. Acuna, L.L. Hood, and E.A. Guinness, LP MOON SPACECRAFT EPHEMERIS V1.0, LP-L-6-EPHEMERIS-V1.0, NASA Planetary Data System, 1998.

description

The Lunar Prospector Ephemeris data set consists of spacecraft position and velocity determinations as a function of time in Moon-centered, Earth equator, mean of J2000 coordinates located in: E990401.DAT

Source_Product_External

external_source_product_identifier

LP-L-ER-3-RDR-3DELEFLUX-80SEC-V1.1:3D990401:3D990401.TAB

reference_type

data_to_calibrated_source_product

doi

10.17189/1519719

curating_facility

PDS Planetary Plasma Interactions Node

description

This is the first version converted to PDS4. The DOI references the source PDS3 data set.

File_Area_Observational

File

file_name

3D990401.TAB

creation_date_time

2003-07-21T14:22:47

file_size

13388265

md5_checksum

6b629b36c920ec6580f6ed8ccd9f3f91

Table_Character

name

Lunar Prospector Electron Reflectometer 3-D Electron Flux Data

offset

0

records

8415

description

A record in the table consists of the following elements: a time tag in PDS format, pertaining to a single record; a time tag in seconds since epoch 1970, pertaining to an entire spectrum made up of 15 records; the energy bin for the record; the spectrum number for the spectrum (starting with 1 at the beginning of the file); 3 magnetic field components; and then a structure of 88 flux values and 88 phi values.

record_delimiter

Carriage-Return Line-Feed

Record_Character

fields

7

groups

2

record_length

1591

Field_Character

name

Time

field_number

1

field_location

1

data_type

ASCII_Date_Time_YMD

field_length

19

description

This column contains spacecraft event time (SCET), in PDS format, for the record. This was calculated by incrementing the SCET for the whole 15-record spectrum (column 2) with a time increment calculated from the approximate spin rate of the spacecraft.

Field_Character

name

Spectrum Time

field_number

2

field_location

21

data_type

ASCII_Real

field_length

15

unit

Seconds

description

This column contains spacecraft event time (SCET) of the center of the 5 second averaging window for the first record in a spectrum. Averages are non-overlapping. The time format is given in seconds after 00:00:00 UT on Jan 1, 1970. Leap seconds are not accounted for in this time format. Each day is assumed to have 86400.0 seconds and years have either 365 or 366 days. This time column is native to the data; column 1 was calculated from it.

Special_Constants

missing_constant

99999999999999.

Field_Character

name

Energy Bin

field_number

3

field_location

37

data_type

ASCII_Real

field_length

9

unit

eV

description

Center energy value of the data channel.

Special_Constants

missing_constant

99999.999

Field_Character

name

Spectrum Number

field_number

4

field_location

47

data_type

ASCII_Integer

field_length

4

description

Ordinal number of spectrum, starting with 1 at the beginning of the file. A spectrum is a group of 15 consecutive records, with each record representing a sweep at a different energy.

Field_Character

name

Bx

field_number

5

field_location

52

data_type

ASCII_Real

field_length

13

unit

nT

description

Magnetic field component along the S/C X-axis.

Special_Constants

missing_constant

999999.999999

Field_Character

name

By

field_number

6

field_location

66

data_type

ASCII_Real

field_length

13

unit

nT

description

Magnetic field component along the S/C Y-axis.

Special_Constants

missing_constant

999999.999999

Field_Character

name

Bz

field_number

7

field_location

80

data_type

ASCII_Real

field_length

13

unit

nT

description

Magnetic field component along the S/C Z-axis.

Special_Constants

missing_constant

999999.999999

Group_Field_Character

repetitions

88

fields

1

groups

0

group_location

94

group_length

880

Field_Character

name

Electron Flux

field_location

1

data_type

ASCII_Real

field_length

10

unit

cm**-2 * s**-1 * sr**-1 * eV**-1

description

88 electron fluxes, one per Phi direction. missing_constant = 9.999E-99 represents the flagged values from the instrument team. error_constant = -9.99E-99 represents the flagged value from the PPI Node.

Special_Constants

missing_constant

9.999E-99

error_constant

-9.99E-99

Group_Field_Character

repetitions

88

fields

1

groups

0

group_location

974

group_length

616

Field_Character

name

Phi Values

field_location

1

data_type

ASCII_Real

field_length

7

unit

Degrees

description

88 Phi values (azimuthal sector centers). missing_constant = 999.99 represents the flagged values from the instrument team. invalid_constant = 998.99 represents the flagged value from the PPI Node.

Special_Constants

missing_constant

999.99

invalid_constant

998.99