Near-Earth Asteroid Tracker

Live close approach data from NASA · Updated hourly

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Asteroid: 494690 (2004 JQ1)

Potentially hazardous 2026-Dec-09 20:00 UTC

Potentially hazardous by NASA classification — Classified hazardous by NASA due to its size — passing safely. No known asteroid poses an impact risk in the next 100+ years.

Historical context

This object passes within 23.51 LD of Earth. Approaches this close (within 24 LD) are recorded several times per month across all tracked near-Earth objects.

Size comparison

Estimated diameter: 254–568m — about the size of a large sports stadium.

If it were to strike Earth (it won't), the estimated impact energy would be approximately 3,921 megatons of TNT.

Closest distance
23.51 LD
9.0 million km
Relative velocity
21.27 km/s
76,555 km/h
Diameter estimate
~411m
254–568m range
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