Engineering Real physics. Not approximations. Every trajectory in NEO Radar is integrated from JPL Horizons ephemeris with full gravitational perturbation from the outer planets. The numbers you see are the numbers a mission planner would see. E₀ → E₁ → E₂ → E₃ ε < 1e-12 01 / Kepler Solves Kepler's equation, not lookup tables. Mean anomaly to eccentric anomaly via Newton-Raphson with adaptive seed, converging to 1×10⁻¹² in under four iterations even for high-eccentricity orbits. M → E → ν e < 0.99 ε = 1e-12 02 / Perturbation Jupiter and Saturn pulled, and you see the pull. Toggle outer-planet gravity on or off. The uncertainty cone widens visibly on Jupiter-flyby trajectories — what mission planners call the keyhole problem. N-body RK4 Adaptive Δt All 8 planets 1999 2025 2050 26 yr arc σ = 412 km 03 / Data JPL Horizons ephemeris, locally cached. Pulled directly from JPL Horizons and pinned to disk for instant access. Observation arcs and uncertainty parameters travel with every object — no approximations, no drift. NASA NeoWs SPICE kernels Local cache
First seen: 2026-07-22 17:49
Last seen: 2026-07-22 20:51