PVO VENUS ONMS: Superthermal Oxygen Ion Measurements from Pioneer Venus Orbiter

Pioneer Venus Orbiter data from the ONMS instrument, detecting superthermal oxygen ions with energies exceeding 36 eV in the spacecraft frame. The dataset was produced by NASA, with instrument configurations specified for orbits 1-645 and above 923, and a last update recorded on 2026-03 13. Measurements focus on energetic ion signatures observed during early orbits near Venus periapsis.

Use Cases

• Modeling superthermal ion populations based on energy thresholds exceeding 36 eV.
• Analyzing temporal ion signature patterns based on erratic and unpredictable behavior described.
• Comparing instrument detection sensitivity based on RPA and non-RPA mode configurations mentioned.
• Studying ionospheric conditions at high altitudes based on measurements taken above the sensible neutral atmosphere.

Strengths

• Specific energy threshold of >36 eV for ion detection is provided.
• Instrument configuration details for distinct orbit ranges (1-645 and >923) are specified.
• Data originates from the authoritative NASA Pioneer Venus mission.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.
• Sample data is unavailable for preview.

Provenance

Source

National Aeronautics and Space Administration

Collection Method

Measurements from the ONMS instrument aboard the Pioneer Venus Orbiter.

Time Range

Covers data from early orbits, with specific references to orbit numbers 1-645 and above 923.

Freshness

Last updated 2026-03-13 20:24:45.661460; freshness should be verified.

Geography

Venus orbit, with measurements focused near periapsis.