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NIMS RADIANCE POINT SPECTRA OF IDA AND DACTYL V1.0 (PDS)

NSSDCA ID: PSSB-00552

Availability: Archived at NSSDC, accessible from elsewhere

Time span: 1985-09-23 to 2013-03-31

Description

This description was generated automatically using input from the Planetary Data System.

Data Set Overview

243 Ida radiance Near Infrared Mapping Spectrometer point spectra data description 1 - INTRODUCTION This data volume contains a radiometrically corrected point spectra of asteroid 243 Ida and a spectrum of the asteroid satellite Dactyl as acquired by the Galileo spacecraft Near Infrared Mapping Spectrometer (NIMS, Carlson et al., 1992) on August 28, 1993 (Carlson et al., 1994). They record the spectra collected as the Galileo spacecraft approached the 243 Ida system. These data are products of the calibration of the raw data number files idu002tn.qub, idu005tn.qub, idu006tn.qub, idu007tn.qub, idu019tn.qub, idu020tn.qub, idu022tn.qub, idu028tn.qub, idu032tn.qub, idu033tn.qub, and idu035tn.qub (DATA SET ID ='GO-A-NIMS-3-TUBE-V1.0') with calibration factors (DATA SET ID = 'GO-J-NIMS-4-MOSAIC-V1.0') acquired during the Jovian tour of the Galileo mission. These raw data .qub files are archived in the Imaging Node of the NASA Planetary Data System (PDS). These calibrated spectra consist of radiance and incidence/flux measurements for wavelengths between 0.7 - 5.2 micrometers. The data files are named by combining the target name, the Galileo spacecraft clock value at the start of the observation, and the data product type. For instance 'ida2025514radiance.tab' is a combination of the target name 'Ida', the spacecraft clock time of '2025514', and the 'radiance' data type. The .tab suffix indicates that the file is a PDS formatted text table file. The 'reflectance' data type refers to files that contain incidence/flux spectra. 2 - DATA OVERVIEW TABLE File Bands Object Observation Target Start(UT) Distance(km) ida2025514radiance.tab 17 243 Ida 14:57:59 83244.2 ida2025514reflectance.tab 17 243 Ida 14:57:59 83244.2 ida2025537radiance.tab 17 243 Ida 15:21:13 66040.8 ida2025537reflectance.tab 17 243 Ida 15:21:13 66040.8 ida2025541radiance.tab 17 243 Ida 15:25:25 64069.1 ida2025541reflectance.tab 17 243 Ida 15:25:25 64069.1 ida2025552radiance.tab 17 243 Ida 15:37:07 55639.0 ida2025552reflectance.tab 17 243 Ida 15:37:07 55639.0 ida2025560radiance.tab 17 243 Ida 15:44:29 33021.8 ida2025560reflectance.tab 17 243 Ida 15:44:29 33021.8 ida2025564radiance.tab 17 243 Ida 15:48:39 47087.6 ida2025564reflectance.tab 17 243 Ida 15:48:39 47087.6 ida2025587radiance.tab 17 243 Ida 16:11:57 29819.8 ida2025587reflectance.tab 17 243 Ida 16:11:57 29819.8 ida2025605radiance.tab 379 243 Ida 16:29:54 14694.7 ida2025605reflectance.tab 379 243 Ida 16:29:54 14694.7 ida2025609radiance.tab 396 243 Ida 16:33:53 12689.3 ida2025609reflectance.tab 396 243 Ida 16:33:53 12689.3 ida2025612radiance.tab 51 243 Ida 16:37:45 10356.6 ida2025612reflectance.tab 51 243 Ida 16:37:45 10356.6 dactyl2025622radiance.tab 17 Dactyl 16:47:45 3957.0 dactyl2025622reflectance.tab 17 Dactyl 16:47:45 3957.0 3 - GALILEO MISSION DESCRIPTION Galileo was a mission to Jupiter to perform long-term studies of the Jovian atmosphere and detailed studies of the Galilean satellites (Jet Propulsion Laboratory Interoffice Memorandum GLL-NAV-92-90, 1992). It consisted of a two part spacecraft, an orbiter and an atmospheric probe. Both components were launched from the space shuttle Atlantis on October 18, 1989. The orbiter contained remote sensing, particles, and wave sensors. The remote sensing instruments included the Solid State Imager and the Near Infrared Mapping Spectrometer. The atmospheric probe contained in-situ sensors to directly measure the atmosphere of Jupiter. The Galileo spacecraft encountered Venus (February 10, 1990), the Earth Moon system (December 8, 1990 and December 8, 1992), asteroid 951 Gaspra (October 29, 1991), asteroid 243 Ida (August 28, 1993) before entering the orbit of Jupiter on December 8, 1995. This data set is from the asteroid 243 Ida encounter. The Galileo mission investigated the Jovian system by deploying its atmospheric probe on July 13, 1995 and conducting observations until plunged into Jupiter on September 21, 2003. 4 - INSTRUMENT DESCRIPTION The Near Infrared Mapping Spectrometer (Carlson et al., 1992) instrument was an imaging spectrometer covering the wavelength region 0.7 to 5.2 micrometers. Its spectral resolution is 0.025 micron beyond 1 micron, and 0.0125 microns below 1 micron, yielding 204 spectral elements in nominal mode. The nominal pixel size is a square 0.5 x 0.5 milliradians. The instrument acquires data in the order: (1) sampling of 17 detectors, (2) stepping of the scan mirror (20 elements in cross-cone), (3) stepping of the grating (nominally 12 steps per cycle). The nominal 204 wavelength cycle requires 4 1/3 seconds. The detectors (2 silicon, 15 indium antimonide) sample approximately uniformly across the spectrum. The stepping of the grating provided NIMS with a variety of spectral data collection modes that ranged from 17 channels (no grating step movements) to 408 channels (24 grating step movements). 5 - 243 IDA ASTEROID ENCOUNTER NIMS OBSERVATIONS The Galileo spacecraft performed a flyby encounter of the 243 Ida asteroid system with its closest approach occurring at 16:52:04 on August 28, 1993 UTC. The closest approach was at 243 Ida's dark side, 75 degrees south ecliptic latitude, at a 2400 kilometer range. NIMS conducted two types of science observations; the rotation observations and the 'close-in' observations. The rotation portion covered approximate 390 degrees of 243 Ida rotation starting at -322 rims from closest approach. A rim is a unit of Galileo spacecraft clock time that is 60 2/3 seconds in length. NIMS acquired samples every 90 degrees (17 and 408 channel modes), 30 degrees (102 channel mode), and 15 degrees (102 channel mode) of rotation. The 'close-in' portion covers from -28 rims prior to closest approach (the end of the rotation observations) to 1 rim after closest approach. At -28 rims and -22 rims, NIMS acquired two 204 channel mode samples. At -11 rims before closest approach, NIMS observed 243 Ida in the 102 channel mode to determine asteroid composition. From -5 rims to 1 rim, collaborative NIMS and Galileo Solid State Imager (SSI) observations were taken; NIMS acquires data in a 17 channel mode at the highest spatial resolution possible for the 243 Ida Encounter. NIMS also rode along in the 17 channel mode on additional SSI observations from -1 to +1 Rim to obtain the highest possible spatial resolution data on the asteroid. Radiometric and photometric calibration observations were conducted by NIMS after the completion of the science observation sequence. The products in this data volume are a subset of the spatially unresolved NIMS observations of the 243 Ida system. The Galileo mission at the time of the 243 Ida encounter did not have an operational high gain antenna to relay the data back to Earth. The observations were recorded to a spacecraft tape recorder a played back to Earth. A subset of the collected NIMS data was relayed back to Earth. The data set was further reduced in number by calibrating only the data that had significant target signal. The number of spectral channels was also reduced to those that could be calibrated. This reduction was primarily due to the erroneous scan platform motion that occurred during the 243 Ida encounter. This motion offset asteroid 243 Ida in the NIMS aperture/slit during the sensor scan sequence. This motion resulted in a varying intensity of the 243 Ida signal as the NIMS sensor collected data. In these instances, only the data from the first grating step were calibrated. 6 - DATA FILE FORMAT DESCRIPTION The data files for the 243 Ida radiance Near Infrared Mapping Spectrometer point spectra are ASCII (American Standard Code for Information Interchange) text files. Each data file contains columns of floating point numeric values separated by spaces. The radiance files consist of columns of wavelength values (micrometers), radiance (microwatts*centimeters**-2*steradians** -1*micrometers**-1), and instrument radiance precision (microwatts*centimeters**-2*steradians** -1*micrometers**-1). The reflectance files consist of columns of wavelength values (micrometers), reflectance (a ratio of incidence/flux), and instrument reflectance precision (a ratio of incidence/flux precision values). The calibration files consist of columns of wavelength values (micrometers), sensitivity (micrometers*steradians*centimeters**2*microwatts**-1), and dark values (data number). The solar files consist of columns of wavelength values (micrometers), and solar radiance (microwatts*centimeters**-2*steradians** -1*micrometers**-1). 7 - DATA PROCESSING HISTORY The radiance data in this data volume are derived from archived NIMS spectral images files available from the NASA PDS Imaging Node. The 243 Ida and Dactyl NIMS observations are archived in the Imaging Node as spectral image files of data number or instrument count values (DATA SET ID ='GO-A-NIMS-3-TUBE-V1.0'). These data number values were converted into radiance using the following equation: radiance value = (data number value - dark value)/sensitivity value. The dark value was determined through an average of background sky pixels for the observation. The sensitivity value was obtained from recorded values used to process the NIMS observations of the Jupiter satellites Europa and Ganymede (DATA SET ID = 'GO-J-NIMS-4-MOSAIC-V1.0') that employed the same instrument collection modes and gains as the 243 Ida observations. The reflectance or incidence/flux values were calculated through a ratio of the radiance spectra over solar radiance spectrum. These reflectance values were scaled by a pixel fill factor determined by the coverage of a NIMS pixel by the aspect of the target as imaged by the Galileo Solid State Imager. The solar radiance spectra were created through an application of the inverse square law of radiance propagation to solar values archived in a NIMS Io observation (DATA SET ID = 'GO-J-NIMS-4-MOSAIC-V1.0'). The inverse square law was used to convert the solar radiance values at Io's distance to those that would be observed at asteroid 243 Ida. The point spectra in this data volume are the radiance or incidence/flux values of the single pixel in the processed spectral image that contained data from the spatially unresolved 243 Ida or Dactyl. File specific processing information can be found in the following paragraphs of this section. The file ida2025514radiance.tab is derived from DN values from line 5 sample 11 in PDS file IDU019TN.QUB (DATA SET ID GO-A-NIMS-3-TUBE-V1.0) and calibrated with values from the PDS file G2C002CI.QUB (DATA SET ID GO-J-NIMS-4-MOSAIC-V1.0). The file ida2025514calib.tab contains the calibration values from the PDS file G2C002CI.QUB (DATA SET ID GO-J-NIMS-4-MOSAIC-V1.0) used to create ida2025514radiance.tab. The file ida2025514reflectance.tab is derived by a ratio of radiance values from ida2025514radiance.tab with solar radiance values derived from the PDS file C3I002CI.QUB (DATA SET ID GO-J-NIMS-4-MOSAIC-V1.0). A 28% pixel fill factor was used based on corresponding Galileo Solid State Imager imagery. The file ida2025514solar.tab contains the solar radiance derived from the PDS file C3I002CI.QUB (DATA SET ID GO-J-NIMS-4-MOSAIC-V1.0) used to create ida2025514reflectance.tab. Sun and target distances used in the inverse square law calculations to model solar values at the target used the SPICE Tool Kit and the SPICE files s970311a.bsp, naif0008.tls, mips010314.tpc, and mk00062a.tsc. The file ida2025537radiance.tab is derived from DN values from line 14 sample 11 in PDS file IDU020TN.QUB(DATA SET ID =GO-A-NIMS-3-TUBE-V1.0) and calibrated with values from the PDS file C3E001CI.QUB (DATA SET ID GO-J-NIMS-4-MOSAIC-V1.0). The file ida2025537calib.tab contains the calibration values from the PDS file C3E001CI.QUB (DATA SET ID GO-J-NIMS-4-MOSAIC-V1.0) used to create ida2025537radiance.tab. The file ida2025537reflectance.tab is derived by a ratio of radiance values from ida2025537radiance.tab with solar radiance values derived from the PDS file C3I002CI.QUB (DATA SET ID GO-J-NIMS-4-MOSAIC-V1.0). A 19% pixel fill factor was used based on corresponding Galileo Solid State Imager imagery. The file ida2025537solar.tab contains the solar radiance derived from the PDS file C3I002CI.QUB (DATA SET ID GO-J-NIMS-4-MOSAIC-V1.0) used to create ida2025537reflectance.tab. Sun and target distances used in the inverse square law calculations to model solar values at the target used the SPICE Tool Kit and the SPICE files s970311a.bsp, naif0008.tls, mips010314.tpc, and mk00062a.tsc. The file ida2025541radiance.tab is derived from DN values from line 4 sample 11 in PDS file IDU035TN.QUB (DATA SET ID GO-A-NIMS-3-TUBE-V1.0) and calibrated with values from the PDS file C3E001CI.QUB (DATA SET ID GO-J-NIMS-4-MOSAIC-V1.0). The file ida2025541calib.tab contains the calibration values from the PDS file C3E001CI.QUB (DATA SET ID GO-J-NIMS-4-MOSAIC-V1.0) used to create ida2025541radiance.tab. The file ida2025541reflectance.tab is derived by a ratio of radiance values from ida2025541radiance.tab with solar radiance values derived from the PDS file C3I002CI.QUB (DATA SET ID GO-J-NIMS-4-MOSAIC-V1.0). A 50% pixel fill factor was used based on corresponding Galileo Solid State Imager imagery. The file ida2025541solar.tab contains the solar radiance derived from the PDS file C3I002CI.QUB (DATA SET ID GO-J-NIMS-4-MOSAIC-V1.0) used to create ida2025541reflectance.tab. Sun and target distances used in the inverse square law calculations to model solar values at the target used the SPICE Tool Kit and the SPICE files s970311a.bsp, naif0008.tls, mips010314.tpc, and mk00062a.tsc. The file ida2025552radiance.tab is derived from DN values from line 6 sample 11 in PDS file IDU028TN.QUB (DATA SET ID GO-A-NIMS-3-TUBE-V1.0) and calibrated with values from the PDS file C3E001CI.QUB (DATA SET ID GO-J-NIMS-4-MOSAIC-V1.0). The file ida2025552calib.tab contains the calibration values from the PDS file C3E001CI.QUB (DATA SET ID GO-J-NIMS-4-MOSAIC-V1.0) used to create ida2025552radiance.tab. The file ida2025552reflectance.tab is derived by a ratio of radiance values from ida2025552radiance.tab with solar radiance values derived from the PDS file C3I002CI.QUB (DATA SET ID GO-J-NIMS-4-MOSAIC-V1.0). A 100% pixel fill factor was used based on corresponding Galileo Solid State Imager imagery. The file ida2025552solar.tab contains the solar radiance derived from the PDS file C3I002CI.QUB (DATA SET ID GO-J-NIMS-4-MOSAIC-V1.0) used to create ida2025552reflectance.tab. Sun and target distances used in the inverse square law calculations to model solar values at the target used the SPICE Tool Kit and the SPICE files s970311a.bsp, naif0008.tls, mips010314.tpc, and mk00062a.tsc. The file ida2025560radiance.tab is derived from DN values from line 41 sample 12 in PDS file IDU022TN.QUB (DATA SET ID GO-A-NIMS-3-TUBE-V1.0) and calibrated with values from the PDS file C3E001CI.QUB (DATA SET ID GO-J-NIMS-4-MOSAIC-V1.0). The file ida2025560calib.tab contains the calibration values from the PDS file C3E001CI.QUB (DATA SET ID GO-J-NIMS-4-MOSAIC-V1.0) used to create ida2025560radiance.tab. The file ida2025560reflectance.tab is derived by a ratio of radiance values from ida2025560radiance.tab with solar radiance values derived from the PDS file C3I002CI.QUB (DATA SET ID GO-J-NIMS-4-MOSAIC-V1.0). A 100% pixel fill factor was used based on corresponding Galileo Solid State Imager imagery. The file ida2025560solar.tab contains the solar radiance derived from the PDS file C3I002CI.QUB (DATA SET ID GO-J-NIMS-4-MOSAIC-V1.0) used to create ida2025560reflectance.tab. Sun and target distances used in the inverse square law calculations to model solar values at the target used the SPICE Tool Kit and the SPICE files s970311a.bsp, naif0008.tls, mips010314.tpc, and mk00062a.tsc. The file ida2025564radiance.tab is derived from DN values from line 6 sample 11 in PDS file IDU032TN.QUB (DATA SET ID GO-A-NIMS-3-TUBE-V1.0) calibrated with values from the PDS file C3E001CI.QUB (DATA SET ID GO-J-NIMS-4-MOSAIC-V1.0). The file ida2025564calib.tab contains the calibration values from the PDS file C3E001CI.QUB (DATA SET ID GO-J-NIMS-4-MOSAIC-V1.0) used to create ida2025564radiance.tab. The file ida2025564reflectance.tab is derived by a ratio of radiance values from ida2025564radiance.tab with solar radiance values derived from the PDS file C3I002CI.QUB (DATA SET ID GO-J-NIMS-4-MOSAIC-V1.0). A 25% pixel fill factor was used based on corresponding Galileo Solid State Imager imagery. The file ida2025564solar.tab contains the solar radiance derived from the PDS file C3I002CI.QUB (DATA SET ID GO-J-NIMS-4-MOSAIC-V1.0) used to create ida2025564reflectance.tab. Sun and target distances used in the inverse square law calculations to model solar values at the target used the SPICE Tool Kit and the SPICE files s970311a.bsp, naif0008.tls, mips010314.tpc, and mk00062a.tsc. The file ida2025587radiance.tab is derived from DN values from line 8 sample 11 in PDS file IDU033TN.QUB (DATA SET ID GO-A-NIMS-3-TUBE-V1.0) and calibrated with values from the PDS file C3E001CI.QUB (DATA SET ID GO-J-NIMS-4-MOSAIC-V1.0). The file ida2025587calib.tab contains the calibration values from the PDS file C3E001CI.QUB (DATA SET ID GO-J-NIMS-4-MOSAIC-V1.0) used to create ida2025587radiance.tab. The file ida2025587reflectance.tab is derived by a ratio of radiance values from ida2025587radiance.tab with solar radiance values derived from the PDS file C3I002CI.QUB (DATA SET ID GO-J-NIMS-4-MOSAIC-V1.0). A 50% pixel fill factor was used based on corresponding Galileo Solid State Imager imagery. The file ida2025587solar.tab contains the solar radiance derived from the PDS file C3I002CI.QUB (DATA SET ID GO-J-NIMS-4-MOSAIC-V1.0) used to create ida2025564reflectance.tab. Sun and target distances used in the inverse square law calculations to model solar values at the target used the SPICE Tool Kit and the SPICE files s970311a.bsp, naif0008.tls, mips010314.tpc, and mk00062a.tsc. The file ida2025605radiance.tab is derived from DN values from line 4 sample 13 in PDS file IDU006TN.QUB (DATA SET ID GO-A-NIMS-3-TUBE-V1.0) and calibrated with values from the PDS file G1E003CI.QUB, C3E001CI.QUB, and G7G008CI.QUB (DATA SET ID GO-J-NIMS-4-MOSAIC-V1.0). The file ida2025605calib.tab contains the calibration values from the PDS files G1E003CI.QUB, C3E001CI.QUB, and G7G008CI.QUB (DATA SET ID GO-J-NIMS-4-MOSAIC-V1.0) used to create ida2025605radiance.tab. The file ida2025605reflectance.tab is derived by a ratio of radiance values from ida2025605radiance.tab with solar radiance values derived from the PDS file C3I002CI.QUB (DATA SET ID GO-J-NIMS-4-MOSAIC-V1.0). A 100% pixel fill factor was used based on corresponding Galileo Solid State Imager imagery. The file ida2025605solar.tab contains the solar radiance derived from the PDS file C3I002CI.QUB (DATA SET ID GO-J-NIMS-4-MOSAIC-V1.0) used to create ida2025605reflectance.tab. Sun and target distances used in the inverse square law calculations to model solar values at the target used the SPICE Tool Kit and the SPICE files s970311a.bsp, naif0008.tls, mips010314.tpc, and mk00062a.tsc. The file ida2025609radiance.tab is derived from DN values from line 11 sample 13 in PDS file IDU005TN.QUB (DATA SET ID GO-A-NIMS-3-TUBE-V1.0) and calibrated with values from the PDS files G1E003CI.QUB, C3E001CI.QUB, and G7G008CI.QUB (DATA SET ID GO-J-NIMS-4-MOSAIC-V1.0). The file ida2025609calib.tab contains the calibration values from the PDS files G1E003CI.QUB, C3E001CI.QUB, and G7G008CI.QUB (DATA SET ID GO-J-NIMS-4-MOSAIC-V1.0) used to create ida2025609radiance.tab. The file ida2025609reflectance.tab is derived by a ratio of radiance values from ida2025609radiance.tab with solar radiance values derived from the PDS file C3I002CI.QUB (DATA SET ID GO-J-NIMS-4-MOSAIC-V1.0). A 100% pixel fill factor was used based on corresponding Galileo Solid State Imager imagery. The file ida2025609solar.tab contains the solar radiance derived from the PDS file C3I002CI.QUB (DATA SET ID GO-J-NIMS-4-MOSAIC-V1.0) used to create ida2025609reflectance.tab. Sun and target distances used in the inverse square law calculations to model solar values at the target used the SPICE Tool Kit and the SPICE files s970311a.bsp, naif0008.tls, mips010314.tpc, and mk00062a.tsc. The file ida2025612radiance.tab is derived from DN values from line 4 sample 16 in PDS file IDU007TN.QUB (DATA SET ID GO-A-NIMS-3-TUBE-V1.0) and calibrated with values from the PDS file G1E003CI.QUB, C3E001CI.QUB, and G7G008CI.QUB (DATA SET ID GO-J-NIMS-4-MOSAIC-V1.0). The file ida2025612calib.tab contains the calibration values from the PDS files G1E003CI.QUB, C3E001CI.QUB, and G7G008CI.QUB (DATA SET ID GO-J-NIMS-4-MOSAIC-V1.0) used to create ida2025609radiance.tab. The file ida2025612reflectance.tab is derived by a ratio of radiance values from ida2025612radiance.tab with solar radiance values derived from the PDS file C3I002CI.QUB (DATA SET ID GO-J-NIMS-4-MOSAIC-V1.0). A 100% pixel fill factor was used based on corresponding Galileo Solid State Imager imagery. The file ida2025612solar.tab contains the solar radiance derived from the PDS file C3I002CI.QUB (DATA SET ID GO-J-NIMS-4-MOSAIC-V1.0) used to create ida2025612reflectance.tab. Sun and target distances used in the inverse square law calculations to model solar values at the target used the SPICE Tool Kit and the SPICE files s970311a.bsp, naif0008.tls, mips010314.tpc, and mk00062a.tsc. The file dactyl2025622radiance.tab is derived from DN values from line 5 sample 13 in PDS file IDU002TN.QUB (DATA SET ID GO-A-NIMS-3-TUBE-V1.0) and calibrated with values from the PDS file C3E001CI.QUB (DATA SET ID GO-J-NIMS-4-MOSAIC-V1.0). Position vectors are the values for 243 Ida. Distance and resolution values calculated from Galileo Solid State Imager imagery. The file dactyl2025622calib.tab contains the calibration values from the PDS file C3E001CI.QUB (DATA SET ID GO-J-NIMS-4-MOSAIC-V1.0) used to create dactyl2025622radiance.tab. The file dactyl2025622reflectance.tab is derived by a ratio of radiance values from dactyl2025622radiance.tab with solar radiance values derived from the PDS file C3I002CI.QUB (DATA SET ID GO-J-NIMS-4-MOSAIC-V1.0). A 14% pixel fill factor was used based on corresponding Galileo Solid State Imager imagery. The file dactyl2025622solar.tab contains the solar radiance derived from the PDS file C3I002CI.QUB (DATA SET ID GO-J-NIMS-4-MOSAIC-V1.0) used to create dactyl2025622reflectance.tab. Sun and target distances used in the inverse square law calculations to model solar values at the target used the SPICE Tool Kit and the SPICE files s970311a.bsp, naif0008.tls, mips010314.tpc, and mk00062a.tsc. 8 - POINT SPECTRA SUPPORT INFORMATION The point spectra support data information can be found in the table file science_index.tab. This information includes the name of the data file, the name of the source file archived in the Imaging Node of the PDS, the instrument spacecraft mission name, the instrument name, the spacecraft mission phase name, the target of the observation, the instrument observation type/mode, the observation identifier, the observation start and stop time (Universal Time), the observation start and stop time in Julian date, the observation start and stop time as recorded by the spacecraft clock, the instrument to target center distance (kilometers), the target to Sun distance (kilometers), the spacecraft to Sun position vector in the J2000 reference frame (kilometers), the target to Sun position vector in the J2000 reference frame (kilometers), the target to Earth distance (kilometers), the spacecraft to Earth position vector in the J2000 reference frame (kilometers), the Earth to target position vector in the J2000 reference frame (kilometers), the horizontal pixel scale (kilometers), the vertical pixel scale (kilometers), the observation phase angle (degrees), the Earth to spacecraft state vector in the J2000 reference frame (position in kilometers, velocity in kilometers/second), and the Earth to target state vector in the J2000 reference frame (position in kilometers, velocity in kilometers/second). These geometry values were calculated using the SPICE Tool kit and the following SPICE data files: s970311a.bsp, naif0008.tls, mips010314.tpc, and mk00062a.tsc.

These data are available on-line from the Planetary Data System (PDS) at:

http://sbn.psi.edu/pds/asteroid/GO_A_NIMS_3_POINTSPEC_V1_0/

Alternate Names

  • GO-A-NIMS-3-POINTSPEC-V1.0

Discipline

  • Planetary Science: Small Bodies

Additional Information

Spacecraft

Experiments

Questions and comments about this data collection can be directed to: Dr. Edwin V. Bell, II

 

Personnel

NameRoleOriginal AffiliationE-mail
Dr. Robert W. CarlsonData ProviderNASA Jet Propulsion Laboratoryrcarlson@issac.jpl.nasa.gov
Mr. James C. GranahanGeneral ContactUniversity of Hawaiigranahan@uhpgvax.pgd.hawaii.edu
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