SOHO Ephemeris: Daily Heliocentric Trajectory Coordinates

Heliocentric trajectory data for the SOHO spacecraft, calculated using the 'Mean of Date' method for the Equinox Epoch. The original trajectory data are sourced from NASA JPL's Horizons system, which contains many more objects. National Aeronautics and Space Administration last updated this data product on March 13, 2026.

Use Cases

• Modeling spacecraft heliocentric trajectories based on coordinates like Heliographic (HG) and Solar Ecliptic (SE)
• Analyzing the drift of the First Point of Aries (FPA) based on the description of Equinox Epoch methods
• Comparing planetary orbital data as a proxy for spacecraft ephemeris, as described for objects near Lagrange points

Strengths

• Data originates from NASA JPL's authoritative Horizons system
• Coordinates are calculated using a specific Equinox Epoch method ('Mean of Date')
• Last updated date is March 13, 2026

Limitations

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

Provenance

Source

National Aeronautics and Space Administration

Collection Method

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

Freshness

Last updated 2026-03-13 11:23:29.400630