Donaldjohanson

Donaldjohanson — asteroid, explore its interactive 3D model in Cosmoscope.

Explore Donaldjohanson in a live 3D Solar System. Follow its calculated motion and inspect real astronomical data, distances and orbital facts.

Lucy’s second flyby target turned out bigger and stranger than expected: an elongated, two-lobed body about 8 km long. It is named after the paleoanthropologist who found the Lucy fossil in 1974.

Size

~8 × 3.5 km (Lucy, 2025)

Discovered

1981 — Schelte Bus, Siding Spring

Visited

Lucy flyby, 20 Apr 2025

Shape

Two-lobed contact binary — illustrative rock shown

Named for

Donald Johanson, who found the Lucy fossil

Explore Donaldjohanson in 3D

Cosmoscope places Donaldjohanson in the Solar System using astronomical ephemeris or orbital elements, updated for the simulation time. Explore its calculated motion, distance and orbital facts in the interactive 3D view. Accuracy depends on the orbital model and its valid time range.