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Stardust Wild 2 Encounter Dynamic Science (PDS)


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

Time span: 2004-01-02 to 2004-01-02


This data set contains the Dynamic Science Experiment data collected by the Stardust spacecraft during the Wild 2 encounter on 2 January 2004. Two types of data are given in this data set, the attitude data and the small forces data. The data are organized into two tables in PDS format.

The first table contains the attitude data for 40 minutes around closest approach (19:21:32 UTC on 2 January 2004). The primary parameters contained in the attitude data table are quaternions providing spacecraft orientation relative to the EME 2000 inertial reference frame (also known as the J2000 frame), spacecraft angular rates given in the spacecraft-fixed reference frame, and attitude and angular rate errors from high rate attitude control system (ACS) data. The channelized attitude telemetry produced by the ACS was collected at different rates during encounter. The data before and after closest approach was recorded at 2-second intervals. Around closest approach. from 19:09:29 through 19:36:28 UTC most of attitude data was recorded at 0.1-second intervals. In the attitude data file the header lines list telemetry channel IDs, names, channel data types, and formats.

The second table contains the small forces data, attitude control thruster firing information, at one second intervals spanning 3 hours around closest approach. The primary parameters contained in the small forces data table are thruster firing period begin and end times, accumulated delta-V values and numbers and duration of firings for each of the thrusters. The small forces data file header lines provide the original SFF file header. These data provide a significant measure of the spacecraft's performance and the attitude control system's reaction to particle impacts.

Both data files in this archive are plain ASCII text files, each containing a single PDS-style table with fixed-width, comma-delimited columns. Each file contains a few-line text header preceding the data. Each of the two data files is accompanied by a detached PDS label, described in detail in the ONLABELS.TXT document included in the archive. The format of the table columns is defined by an external table format file, pointed to by the label. The PDS ID is SDU-C-DYNSCI-2-WILD2-V1.0 and the data are contained on CD volume SDDS_0001.

Alternate Names



  • Planetary Science: Small Bodies
  • Planetary Science: Geology and Geophysics


  • 99-003A-04A

Additional Information



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



NameRoleOriginal AffiliationE-mail
Dr. John D. AndersonGeneral ContactNASA Jet Propulsion
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