Voyager 2 LECP: Daily Average Interplanetary Energetic Ion Data

11 energetic ion channels from the Voyager 2 Low Energy Charged Particle instrument, averaged into daily count rates. Data includes passbands in KeV for protons, logarithmic mean energy, geometric factor, and flux conversion factors. The dataset is provided by the National Aeronautics and Space Administration and was last updated in March 2026.

Use Cases

• Modeling interplanetary energetic particle spectra based on the 11 ion channels and flux conversion factors.
• Analyzing temporal trends in particle flux based on daily-averaged count rates over the mission timeline.
• Calibrating or validating space weather models using the provided geometric factors and energy passbands.

Strengths

• Data originates from the NASA Voyager 2 mission, a primary source for outer solar system observations.
• Includes key physical parameters like energy passbands, geometric factors, and flux conversion factors for direct scientific use.
• Daily averaging provides a stable temporal resolution suitable for trend analysis.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.
• Data is provided in a BIN file format, which may require specialized tools for access.

Provenance

Source

National Aeronautics and Space Administration

Collection Method

Measurements from the Low Energy Charged Particle (LECP) instrument aboard the Voyager 2 spacecraft, averaged over 24-hour intervals.

Time Range

Includes data from at least 1977 (e.g., day 300 of 1977); the full temporal coverage is not explicitly stated.

Freshness

Last updated 2026-03-13 14:34:05.038049; freshness should be verified.

Geography

Interplanetary medium along the Voyager 2 trajectory.