3i Atlas Comet Tracker
Visit SiteWitness History: Follow Comet 3I/ATLAS's Once-in-a-Lifetime Passage
3i Atlas Comet Tracker
Visit SiteWitness History: Follow Comet 3I/ATLAS's Once-in-a-Lifetime Passage
What is 3i Atlas Comet Tracker?
"3I/ATLAS Comet Tracker is a comprehensive web application dedicated to tracking and studying Comet 3I/ATLAS, the third confirmed interstellar object to visit our solar system. Discovered in July 2025 by the ATLAS survey, this extraordinary comet offers a unique opportunity to study an ancient visitor from beyond our solar system. The platform provides real-time ephemerides data from JPL Horizons, interactive 3D orbital visualizations, detailed observing guides for amateur astronomers, and a complete timeline of key events from discovery to departure. Features include location-based visibility predictions, equipment recommendations, curated news and media from leading space agencies, and educational content about interstellar objects and orbital mechanics. Built with Next.js and modern web technologies, the site serves as an authoritative resource for astronomers, educators, students, and space enthusiasts worldwide. The hyperbolic trajectory of 3I/ATLAS confirms its interstellar origin, making this a once-in-a-lifetime opportunity to observe and study a visitor from another stellar system."
3i Atlas Comet Tracker's Core Features
Real-time Ephemerides (JPL Horizons)
Live, authoritative position and trajectory data pulled from JPL Horizons so users can see the comet's current coordinates, velocity and predicted path with high accuracy.
Interactive 3D Orbit Visualizer
An interactive 3D view (powered by NASA's Eyes integration) that lets users rotate, zoom and replay the comet's hyperbolic trajectory through the solar system and compare it with planetary orbits.
Location-based Visibility Predictions
Enter your observing location and the tool calculates local rise/set times, optimal viewing windows, predicted magnitude and sky charts to plan observations.
Observing Guides & Equipment Recommendations
Detailed how-to guidance for visual and photographic observation: recommended apertures, eyepieces, exposure settings, mounts and tips for detecting faint coma and tail features.
Curated News, Media Gallery & Timeline
Daily updates, aggregated science news from leading agencies, and a media gallery with images/videos and a mission timeline tracking discovery, perihelion, Earth approach and departure.