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Celestial Mechanics

NSSDCA ID: 1971-051A-07

Mission Name: Mariner 9
Principal Investigator:Mr. Jack Lorell


This was the celestial mechanics experiment for the analysis of the orbit path tracking data. It provided improved determination of the Mars gravity field and ephemeris as well as highly accurate

Alternate Names

  • Mariner9/CelestialMechanics


  • Astronomy: Celestial Mechanics
  • Planetary Science: Celestial Mechanics

Additional Information

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



NameRoleOriginal AffiliationE-mail
Mr. Jack LorellPrincipal InvestigatorNASA Jet Propulsion Laboratory

Selected References

  • Lorell, J., et al., Mariner 9 celestial mechanics experiment - gravity field and pole direction of Mars, Science, 175, No. 4019, 317-320, doi:10.1126/science.175.4019.317, Jan. 1972.
  • Lorell, J., et al., Celestial mechanics experiment for Mariner Mars, Icarus, 12, No. 1, 78-81, doi:10.1016/0019-1035(70)90033-3, Jan. 1970.
  • Lorell, J., and I. Shapiro, Mariner 9 celestial mechanics experiment - A status report, J. Geophys. Res., 78, No. 20, 4327-4329, doi:10.1029/JB078i020p04327, July 1973.
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