William Henry Pickering (February 15, 1858 – January 16, 1938) was an American astronomer. Pickering constructed and established several observatories or astronomical observation stations, notably including Percival Lowell's Flagstaff Observatory. He spent much of the later part of his life at his private observatory in Jamaica.
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In this Dossier
- ⭐ Core Definition: William Henry Pickering
- William Henry Pickering in the context of Phoebe (moon)
- William Henry Pickering in the context of DeLisle Stewart
William Henry Pickering in the context of Phoebe (moon)
Phoebe (/ˈfiːbi/ FEE-bee) is the most massive irregular satellite of Saturn with a mean diameter of 213 km (132 mi). It was discovered by William Henry Pickering on 18 March 1899 from photographic plates that had been taken by DeLisle Stewart starting on 16 August 1898 at the Boyden Station of the Carmen Alto Observatory near Arequipa, Peru. It was the first natural satellite to be discovered photographically.
Phoebe was the first target encountered upon the arrival of the Cassini spacecraft in the Saturn system in 2004, and is thus unusually well-studied for an irregular moon of its size. Cassini's trajectory to Saturn and time of arrival were chosen to permit this flyby. After the encounter and its insertion into orbit, Cassini did not go much beyond the orbit of Iapetus.
View the full Wikipedia page for Phoebe (moon)William Henry Pickering in the context of DeLisle Stewart
DeLisle Stewart (March 16, 1870 – February 2, 1941) was an American astronomer.
In 1896 he became a staff member of Harvard College Observatory, and from 1898 to 1901 he worked at that observatory's station at Arequipa, Peru, where he took the photographic plates that William Henry Pickering used to discover Saturn's moon Phoebe. He discovered many new nebulas in the sky's southern hemisphere.
View the full Wikipedia page for DeLisle Stewart