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Voyager 2 Reduced Triton Radio Occultation Data (PDS)


Availability: Archived at NSSDC, accessible from elsewhere

Time span: 1989-08-25 to 1989-08-25


This data collection holds the PDS data set with processed data acquired from the Voyager 2 Triton radio occultation experiment. Observations were carried out using the Voyager 2 spacecraft and facilities of the NASA Deep Space Network (DSN); they were designed to detect and measure the structure of Triton's atmosphere.

During the Triton occultation, the Voyager 2 spacecraft provided a coherent, dual-frequency microwave radio signal source. The signal frequency was derived from a precision, onboard Ultra-Stable Oscillator (USO). The spacecraft high-gain antenna (HGA) beamed that signal through the atmosphere of Triton. As the spacecraft moved on its trajectory, the radio signal probed different levels in the atmosphere.

Six tables are included in the data set. In all cases, tables are constructed with altitude above the surface as the free parameter -- in steps of 0.5 km. In four tables phase, relative phase, or residual phase (in radians) is the dependent parameter. In one table temperature (in Kelvins) is the dependent parameter. The sixth table is an autocorrelation, so the dependent variable is the dimensionless autocorrelation value, with a potential range of +/-1.0.

This is PDS data set VG2-NSA-RSS-5-ROCC-V1.0 held on volume VG_2499. These data are available online at

Alternate Names

  • VG2-NSA-RSS-5-ROCC-V1.0


  • Planetary Science: Atmospheres

Additional Information



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



NameRoleOriginal AffiliationE-mail
Prof. G. Leonard TylerData ProviderStanford
Dr. Lyle F. HuberGeneral ContactNew Mexico State
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