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Discovery of Amalthea

Name: Discovery of Amalthea
Start: 1892-09-09
Location: Lick Observatory

When: 9 September 1892
Where: Lick Observatory
Part of: Edward Emerson Barnard discovers Amalthea, fifth moon of Jupiter

Barnard identified Jupiter's fifth moon, Amalthea, on 9 September 1892, marking the last visual satellite discovery.

Using the 36-inch refractor at Lick Observatory, Barnard discovered Amalthea, the fifth moon of Jupiter. This was the first new Jovian satellite since Galileo's 1610 discoveries. Amalthea is the largest inner satellite, irregularly shaped, and reddish, with the third-closest orbit among known moons.

Sources

Amalthea (moon) Wikipedia, revision of 2026-10-04
Lick Observatory Wikipedia, revision of 2026-09-09

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