Near-Earth Asteroid Tracker

Live close approach data from NASA · Updated hourly

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Asteroid: (2015 TM178)

Notable 2026-Dec-04 16:04 UTC

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

Historical context

This object passes within 126.06 LD of Earth. Approaches this close (within 127 LD) are recorded several times per month across all tracked near-Earth objects.

Size comparison

Estimated diameter: 139–312m — about the height of the Eiffel Tower (330m).

If it were to strike Earth (it won't), the estimated impact energy would be approximately 5 megatons of TNT.

Closest distance
126.06 LD
48.5 million km
Relative velocity
1.93 km/s
6,940 km/h
Diameter estimate
~226m
139–312m range
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