Asaph Hall
American astronomer (1829–1907)
- Fame53.7
- Momentum0.5
- United States rank#37
Source-basedStable
- Fame53.7
- Momentum0.5
- United States rank#37
- Scientists rank#131
- Wikipedia1.6K
Lived 1829–1907, aged 78United States
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Summary
Updated 2026-06-09
He found Mars's two moons in 1877 when most astronomers thought there were none to find.
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Asaph Hall III was born October 15, 1829, and spent decades mapping the mechanics of the solar system — calculating satellite orbits, measuring Saturn's rotation, weighing Mars itself. In August 1877, working at the U.S. Naval Observatory, he turned a telescope on Mars and spotted what no one else had: two tiny moons wheeling close to the planet, which he named Deimos and Phobos. The discovery made him one of the era's most prominent astronomers, a specialist in double stars and planetary systems. He died November 22, 1907, having proven that even well-watched worlds can hide something in plai…
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Fame
Stable53.7
Composite of search demand, mentions, audience & graph footprint.
Score components
Momentum0.5
Historical21.9
Source confidence60.0
Completeness70.0
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- WikipediaHigh confidencewikipedia · en.wikipedia.org
- WikidataHigh confidencewikidata · wikidata.org
- Pantheon 2.0High confidencedatabase · pantheon.world
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