Asteroid Tracker — Near-Earth Object Watch

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Selected Asteroid

Select an asteroid from the catalog or click one in the map.

Close-approach geometry Earth view

Top-down view of Earth's neighborhood. The solid ring is the Moon's orbit (1 lunar distance).

Approaches — distance vs time log LD

closer = hotter— Moon (1 LD)

Miss-distance distribution LD

About

Asteroid Tracker is a live, interactive view of the near-Earth asteroids passing by our planet. It plots every catalogued close approach over a ±70-day window, places each object on its real Keplerian orbit from NASA/JPL elements, and animates the flybys so you can watch them sweep past Earth.

Alongside the heliocentric map you get a top-down close-approach geometry showing the miss distance against the Moon's orbit, estimated sizes and impact energies, JPL Sentry impact-risk flags, and recent atmospheric fireball detections.

Data: NASA/JPL CAD, SBDB, Sentry & Fireballs. Sizes are estimated from brightness; impact energies are hypothetical — these objects miss Earth. Treat everything as indicative, not operational guidance.

Keys: space play · N now · ←/→ step day · ↑/↓ select · C Earth-lock · scroll to zoom, drag to pan