99942 Apophis — 3D Asteroid Tracker

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99942 Apophis
Orbital elements fetched live from NASA/JPL SBDB API on every page load. Position computed using an elliptical Kepler solver (Newton–Raphson iteration of Kepler's equation). Elements are refined by JPL as new observations come in.

3I/ATLAS (C/2025 N1)
Orbital elements fetched live from NASA/JPL SBDB API. Uses a hyperbolic Kepler solver (Kepler's equation for e > 1, solved via sinh/cosh iteration) because the comet's eccentricity of 6.14 means it is unbound from the Sun. JPL also models non-gravitational acceleration from CO₂ outgassing (A₁ = 5.3×10⁻⁸, A₂ = 1.1×10⁻⁸, A₃ = -6.9×10⁻⁹ au/d²) — actively monitored for anomalies.

Planets & Moon
The inner planets (Mercury, Venus, Earth, Mars) use elliptical Keplerian orbits based on JPL mean orbital elements for realistic positioning. The outer planets (Jupiter through Neptune) are compressed inward so all bodies remain visible in the scene as schematic positional references.

Scene Scale
An internal scale factor (AU_SCALE = 7) compresses astronomical distances for display. The solar system is not shown to scale — this is a schematic 3D visualization designed to show orbital geometry and relative motion.

Update Cadence
Data is fetched on every page load. If the JPL API is unreachable, a local cached solution (solution #54, 782 observations, last updated Feb 19, 2026) is used as fallback. Hardcoded defaults provide a final fallback layer.

99942 Apophis ▶

Aten Potentially Hazardous

Physical

Mean Diameter—

Abs. Magnitude (H)—

Geometric Albedo—

Rotation Period—

Orbital

Semi-major Axis (a)—

Eccentricity (e)—

Inclination (i)—

Orbital Period—

Orbit Details

Perihelion (q)—

Aphelion (Q)—

Asc. Node (Ω)—

Arg. Peri. (ω)—

CLOSE APPROACH — | MISS DISTANCE —

3I/ATLAS ▶

Interstellar Hyperbolic

Discovery

DesignationC/2025 N1

TypeInterstellar Comet

SourceOutside Solar System

Orbital

Eccentricity (e)—

Inclination (i)—

Perihelion (q)—

Status

Current Dist—

TrajectoryExiting System

Orbit TypeHyperbolic

STATUS Interstellar object — hyperbolic escape trajectory