Comet Grigg-Skjellerup Heliocentric Trajectory Data in Multiple Coordinate Systems

Heliocentric trajectory data for Comet Grigg-Skjellerup, calculated using the 'Mean of Date' method for the Equinox Epoch. The data is provided in Heliographic (HG), Heliographic Inertial (HGI), and Solar Ecliptic (SE) coordinate systems. This dataset is produced by the National Aeronautics and Space Administration and was last updated on March 13, 2026.

Use Cases

• Modeling comet trajectories based on heliocentric coordinate data
• Comparing coordinate system transformations based on HG, HGI, and SE data
• Planning spacecraft flybys or observations based on comet ephemeris
• Studying the 'Mean of Date' method for Equinox Epoch calculation

Strengths

• Data sourced from the authoritative JPL Horizons system
• Coordinates calculated using a defined 'Mean of Date' method for consistency
• Provided in multiple standard coordinate systems (HG, HGI, SE)

Limitations

• Column-level documentation is absent; field semantics must be inferred after download
• Row count is unknown, which may limit suitability assessment
• Description metadata is limited; actual data quality requires manual inspection after download

Provenance

Source

National Aeronautics and Space Administration

Collection Method

Original trajectory data taken from NASA JPL Horizons, processed to produce HG, HGI, and SE coordinates.

Time Range

Daily data, but specific temporal coverage is not stated.

Freshness

Last updated 2026-03-13 03:29:04.333725; freshness should be verified

Geography

Heliocentric (solar system) scale.