Near-Earth Asteroid Tracker

Live close approach data from NASA · Updated hourly

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Asteroid: (2017 UX4)

Notable 2026-May-28 01:16 UTC

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

Historical context

This object passes within 124.75 LD of Earth. Approaches this close (within 125 LD) are recorded several times per month across all tracked near-Earth objects.

Size comparison

Estimated diameter: 93–208m — about the size of a city block.

If it were to strike Earth (it won't), the estimated impact energy would be approximately 135 megatons of TNT.

Closest distance
124.75 LD
48.0 million km
Relative velocity
17.81 km/s
64,104 km/h
Diameter estimate
~151m
93–208m range
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