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Selenodesy

NSSDCA ID: 1967-008A-02

Mission Name: Lunar Orbiter 3
Principal Investigator:Dr. William H. Michael, Jr.

Description

The instrumentation for this experiment included a power source, an omnidirectional antenna, and a transponder to obtain information for determining the gravitational field and physical properties of the moon. High-frequency radio signals were received by the spacecraft from earth tracking stations and retransmitted to the stations to provide doppler frequency measurements (range rate) and propagation times (range). The telemetry data were processed in real time by an IBM 7044 computer in conjunction with an IBM 7094 computer. They were then displayed on 100-wpm teletype machines, x-y plotters, and bulk printers for analysis. Data coverage was continuous while the spacecraft was visible from earth. Information was acquired during the cislunar, the first and second ellipse, and the extended mission (from end of photographic mission to lunar impact) phases of the mission. Doppler, ranging, hour angle points, and declination angle points data were accumulated during tracking. The quality of recorded data ranged from good to excellent.

Alternate Names

  • LunarOrbiter3/Selenodesy

Funding Agency

  • NASA-Office of Space Science Applications (United States)

Discipline

  • Planetary Science: Geology and Geophysics

Additional Information

Questions and comments about this experiment can be directed to: Coordinated Request and User Support Office

 

Personnel

NameRoleOriginal AffiliationE-mail
Dr. William H. Michael, Jr.Principal InvestigatorNASA Langley Research Center
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