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Availability: Archived at NSSDC, accessible from elsewhere

Time span: 1977-09-09 to 


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

Data Set Overview ================= These data were obtained from running the program HELICOOR in the public directory NSSDCA::ANON_DIR:[ACTIVE.HELIO]. These data are based on predicted trajectories calculated with the GTDS code by the NSSDC Satellite Situation Center and converted to solar ecliptic and heliographic coordinates by the HELIOCOOR program. The HELICOOR code was written by R. Parthasarathy. The program GENTRJCON added the HILLON longitude. Note that the solar ecliptic coordinates are given with respect to true equinox and ecliptic of date. The solar ascending node was located at ecliptic longitude +74.367 degrees as of 1 Jan. 1900 at 1200 UT; this longitude increases by 1.4 degrees/century. Data Formats ============ field description ----- -----------------------------1. Date YYYY DDD.DD where YY=year and DDD.DD=decimal day 2. Range Heliocentric range in AU 3. SE_Lat Solar Ecliptic latitude in degrees 4. SE_Lon Solar Ecliptic longitude in degrees 5. HG_Lat Heliographic latitude in degrees 6. HG_Lon Heliographic longitude in degrees 7. IHG_Lon Inertial Heliographic longitude in degrees with respect to the ascending node of the solar equator in the ecliptic. Contact Information =================== R. P. (Sardi) Parthasarathy Hughes STX Corporation / Space Physics Data Facility NASA Goddard Space Flight Center Greenbelt, Maryland Phone: (301) 286-8105 Acknowledgement =============== Use of these data in publications should be accompanied at minimum by acknowledgements of the National Space Science Data Center and the responsible Principal Investigator defined in the experiment documentation provided here.

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

Alternate Names

  • VG1-SS-POS-6-1DAY-V1.0


  • Planetary Science: Fields and Particles

Additional Information


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



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