Near-Earth Asteroid Tracker

Live close approach data from NASA · Updated hourly

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Asteroid: (2009 HA21)

Potentially hazardous 2026-Jul-16 21:05 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 138.86 LD of Earth. Approaches this close (within 139 LD) are recorded several times per month across all tracked near-Earth objects.

Size comparison

Estimated diameter: 180–402m — about the height of the Eiffel Tower (330m).

If it were to strike Earth (it won't), the estimated impact energy would be approximately 3,581 megatons of TNT.

Closest distance
138.86 LD
53.4 million km
Relative velocity
34.12 km/s
122,817 km/h
Diameter estimate
~291m
180–402m range
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