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Orbital Data for the Complete Mission of Mariner 9


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

Time span: 1971-05-30 to 1972-10-25


This data set contains Mariner 9 orbit data tapes originated on a UNIVAC 1108 using Fortran V unformatted write statements. The tapes were written in binary. Each tape contains one file. Each tape is a series of records which has been divided into groups, describing the tape itself or containing actual spacecraft data. The tapes begin with a file identification group, followed by a user label group, an orbit data summary group, an identifier group, an orbit data group (which contains the actual spacecraft orbit data), a control statement group, and finally, a file close group (which ends with a physical end-of-file mark on tape). All records are written in logical records of 28-word size with one exception, the orbit data logical records (part of the orbit data group) that are blocked into 252-word records. Some of the tapes do not end exactly as the format description indicates, i.e., with a file close group. This data set has been largely superseded by PSPG-00313.

Alternate Names

  • Orbit Data


  • Ancillary: Ephemeris/Orbit/Attitude


  • 71-051A-00E

Additional Information


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



NameRoleOriginal AffiliationE-mail
Mr. Randall K. HylkemaData ProviderNASA Jet Propulsion Laboratory
Mr. Randall K. HylkemaGeneral ContactNASA Jet Propulsion Laboratory

Selected References

  • Lemoine, F. G., Viking-1 Orbiter and Mariner 9 data tape, Letter, NSSDC, Greenbelt, MD, Feb. 1993.
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