Near-Earth Asteroid Tracker

Live close approach data from NASA · Updated hourly

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Asteroid: (2021 AP4)

Notable 2026-May-29 21:41 UTC

Notable approach — Unusually close or large, but poses no risk.

Historical context

This object passes within 176.73 LD of Earth. Approaches this close (within 177 LD) are recorded several times per month across all tracked near-Earth objects.

Size comparison

Estimated diameter: 81–182m — about the size of a city block.

If it were to strike Earth (it won't), the estimated impact energy would be approximately 77 megatons of TNT.

Closest distance
176.73 LD
68.0 million km
Relative velocity
16.42 km/s
59,096 km/h
Diameter estimate
~132m
81–182m range
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