Comet Hyakutake Daily Heliocentric Trajectory Coordinates

Daily trajectory data for Comet Hyakutake, provided by NASA, with a last update timestamp of 2026-03-13. The dataset contains heliocentric coordinates calculated in Heliographic (HG), Heliographic Inertial (HGI), and Solar Ecliptic (SE) systems, using the 'Mean of Date' method for the Equinox Epoch. Original trajectory data is sourced from NASA JPL's Horizons system, which contains data for many more celestial objects.

Use Cases

• Modeling comet orbital paths based on heliocentric coordinate data.
• Analyzing solar system dynamics based on trajectories in multiple coordinate systems (HG, HGI, SE).
• Comparing spacecraft ephemeris proxies based on the description's note about using planet orbit data as a close approximation.
• Studying the drift of the First Point of Aries (FPA) based on the methodological details for the Equinox Epoch.

Strengths

• Data originates from the authoritative NASA JPL Horizons system.
• Coordinates are provided in three distinct systems (HG, HGI, SE) for comparative analysis.
• The 'Mean of Date' method for the Equinox Epoch is explicitly defined, providing methodological clarity.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count and temporal coverage range are unknown, which may limit suitability assessment.
• The description metadata is limited; actual data quality and completeness require manual inspection after download.

Provenance

Source

National Aeronautics and Space Administration (NASA), JPL Horizons system.

Collection Method

Calculated from original trajectory data sourced from http://ssd.jpl.nasa.gov/horizons.cgi.

Time Range

Daily data; specific date range is not provided in the input.

Freshness

Last updated 2026 03 13 07:40:59.944892; freshness should be verified.

Geography

Heliocentric (solar system); spatial coverage is not Earth-bound.