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NASA Space Science Data Coordinated Archive Header

International Halley Watch (IHW) Addenda Data Collection (PDS)


Availability: At NSSDC, Ready for Offline Distribution (or Staging if Digital)

Time span: 1984-09-14 to 1988-04-08

Ancillary data are not needed for the proper use of these data


This data set contains addenda data for the International Halley Watch Archive coordinated by the PDS Small Bodies Node. The collection gathers additional material for the study of Comets Giacobini-Zinner (GZ) and Halley. Six groups of data are included in these 2 data set volumes: 1) GZ data from the ion composition instrument (ICI) on the International Cometary Explorer (ICE/ISEE-3) ; 2) GZ data from the Ultra Low Energy Charge Analyzer (ULECA) on ICE/ISEE-3 ; 3) Earthbased data from the infrared photometry (IRPHOT) subnet of the IHW ; 4) Earthbased corrected Near Nucleus Studies Network (NNSN) images ; 5) Giotto Radio Experiment Data ; and 6) Earthbased comet outburst images from various observatories. The data files were submitted in both PDS and FITS form.

The first volume (HAL_1001) contains the first 5 data sets and a subset of the sixth, the outburst images, separated by date. The second volume (HAL_1002) contains the remainder of the outburst images. The GZ data from the ICI instrument on ICE/ISEE-3 (PDS Data Set ID ICE-C-ICI-3-RDR-GIACOBINI-ZIN-V1.0) consist of mass spectrometric measurements of ions in the coma of comet Giacobini- Zinner made on 11 September 1985. Arrays are composed of scans in velocity as the M/Q values is held constant. The GZ data from the ULECA instrument (ICE-C-ULECA-3-RDR-GIACOBINI-ZIN-V1.0) are energetic particle observations made with the University of Maryland/Max-Planck-Institut sensor during the encounter with comet Giacobini-Zinner from 9 to 14 September 1985. The IRPHOT data (EAR-C-IRPHOT-2-RDR-HALLEY-ADDENDA-V1.0) comprise 2204 earthbased infrared photometry observations of Comet Halley from 14 September 1984 through 8 April 1988. These data are a series of tables that supplement the earlier Halley data taken by the IRPHOT network. The NNSN images (EAR-C-NNSN-3-EDR-HALLEY-ADDENDA-V1.0) are replacement data for corrupted images taken from 4 April 1986 through 14 April 1986. The Giotto Radio Experiment data (GIO-C-GRE-1-RDR-HALLEY-ADDENDA-V1.0) comprise the TDF (Tracking Data File) and ODR (Original Data Record) files included to supplement the Giotto radio science data. The earthbased outburst images (EAR-C-CCD-3-EDR-HALLEY-OUTBURST-ESO-V1.0, EAR-C-CCD-EDR-HALLEY-OUTBURST-CT-V1.0, EAR-C-CCD-EDR-HALLEY-OUTBURST-UH are from European Southern Observatory, Cerro Tololo Interamerican Observatory, and the University of Hawaii Mauna Kea Observatory.

Alternate Names



  • NASA Space Science Data Coordinated Archive
  • Planetary Data System


  • Planetary Science: Small Bodies

Additional Information



Questions or comments about this data collection can be directed to: Dr. David R. Williams.



NameRoleOriginal AffiliationE-mail
Dr. Edwin J. Grayzeck, Jr.General ContactNASA Goddard Space Flight
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