Near-Earth Asteroid Tracker

Live close approach data from NASA · Updated hourly

← All approaches

Asteroid: (2017 AY3)

Notable 2026-Jun-21 22:39 UTC

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

Historical context

This object passes within 39.78 LD of Earth. Approaches this close (within 40 LD) are recorded several times per month across all tracked near-Earth objects.

Size comparison

Estimated diameter: 197–441m — about the height of the Eiffel Tower (330m).

If it were to strike Earth (it won't), the estimated impact energy would be approximately 865 megatons of TNT.

Closest distance
39.78 LD
15.3 million km
Relative velocity
14.61 km/s
52,584 km/h
Diameter estimate
~319m
197–441m range
From your location

Enable location to see visibility information