Total solar eclipse across Asia (1842)

A total solar eclipse occurred on July 8, 1842, with a magnitude of 1.0543. The path of totality crossed parts of Asia, including China, while Francis Baily observed the event from Italy. The legacy hint of Shanghai is unverified as an observation site, though Shanghai became a treaty port in 1842.

Episodes

Background and detail

Background. The eclipse occurred at the Moon's descending node on Friday, July 8, 1842. Totality was visible in a narrow path across Earth's surface, including parts of modern-day China. The Moon's apparent diameter was larger than the Sun's, blocking direct sunlight. A partial eclipse was visible over a surrounding region thousands of kilometres wide, including parts of Asia.

Observations. Francis Baily observed the total solar eclipse from Italy, focusing on the solar corona and prominences, identifying them as part of the Sun's atmosphere. The phenomenon known as Baily's beads was named in his honor following his correct explanation in 1836. The eclipse was part of an eclipse season, a period roughly every six months when eclipses occur.

Shanghai Context. Shanghai is a provincial-level direct-administered municipality in China. The Treaty of Nanking, which ended the war in 1842, opened Shanghai as one of the five treaty ports for international trade. The legacy row's location hint is unverified as an observation site, but Shanghai was a significant location in 1842.

People involved

Sources

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