Near-Earth Asteroid Tracker

Live close approach data from NASA · Updated hourly

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Asteroid: (2026 HY4)

Notable 2026-May-21 16:41 UTC

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

Historical context

This object passes within 56.41 LD of Earth. Approaches this close (within 57 LD) are recorded several times per month across all tracked near-Earth objects.

Size comparison

Estimated diameter: 89–200m — about the size of a city block.

If it were to strike Earth (it won't), the estimated impact energy would be approximately 72 megatons of TNT.

Closest distance
56.41 LD
21.7 million km
Relative velocity
13.83 km/s
49,771 km/h
Diameter estimate
~145m
89–200m range
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