3I/ATLAS Tracker

This interactive 3D model provides a unique, fully explorable view of Comet 3I/ATLAS's hyperbolic trajectory. Unlike 2D maps, this simulator allows you to see the comet's steep 175-degree orbital inclination in three dimensions, helping you understand why its path takes it "under" the plane of our solar system. (Rotate with left-drag, pan with right-drag, and zoom with the scroll wheel.)

Powered by Three.js and accurate orbital mechanics, the model uses the latest data from the Minor Planet Center (MPC) and NASA/JPL. The comet's path is calculated using Keplerian elements for planets and hyperbolic solving for the comet, scaled for visualization.

Use this tool to visualize why 3I/ATLAS won't hit Earth (closest: Dec 19, 2025, ~1.8 AU) or other planets, despite its high speed and retrograde path. Data sourced from MPC ephemerides.

Disclaimer: This is an educational visualization simplifying n-body dynamics. For precise calculations, refer to NASA/JPL tools.

3D Controls

Use your mouse to interact with the model.

View

Change your perspective. Use the dropdown to lock the camera onto an object.

Simulation Controls

Manipulate the flow of time in the simulation.

Resume Reset Slower 1.0x Faster Date Slider Details Key Facts About the 3D Simulation

Interactivity: Freely rotate, zoom, and pan the solar system. Lock the camera to any body for focused tracking.
Real-Time Data: Positions update based on current Julian Date, with options to speed up, pause, or jump to events.
Visual Cues: Orbits shown as lines (white for hyperbolic comet path), with labels and scaling for clarity.
Closest Approaches: Jump to key events like perihelion (Oct 29, 2025, ~1.36 AU) or planetary flybys (e.g., Mars at 0.19 AU on Oct 3, 2025; Jupiter at 0.36 AU on Mar 16, 2026).
Scientific Accuracy: Uses hyperbolic excess velocity of ~58 km/s and inclination of 175.11° for precise rendering.

Proximity to 3I/ATLAS

A live-updating list of the planets currently closest to the comet.

Key Events

Disclaimer: This website is an educational tool providing a real-time trajectory visualization for the interstellar comet 3I/ATLAS (C/2_2025 N1). All orbital calculations are based on preliminary ephemeris data from the Minor Planet Center (MPC) and NASA/JPL. This simulator was developed by a coding enthusiast leveraging AI tools for rapid development. For official scientific data, please consult NASA or the IAU directly.

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