Historical biography archive · Updated 2026-11-03

Asaph Hall Biography and Timeline

Follow Asaph Hall through 3 dated historical records for United States of America.

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Asaph Hall, historical timeline

A chronological timeline drawn from matching World History Database records.

3Distinct records

1 of 1Page

1877–1877Years on this page

1877

Deimos

Science / Astronomy

Asaph Hall discovers Phobos and Deimos, the moons of Mars

1877

Mars

Science / Astronomy

Asaph Hall discovers Phobos and Deimos, the moons of Mars

1877

Phobos

Science / Astronomy

Asaph Hall discovers Phobos and Deimos, the moons of Mars

Records, sources and methodology

These dates and descriptions come from the historical_events database. Exact duplicate records have been collapsed. Names are grouped by the country, Name 2 and Name 1 fields; records with missing Name 2 cannot be reliably assigned to an individual biography. Check the underlying sources before formal citation.