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50 Years Ago

Saturn’s 10th moon was the first satellite discovered in the modern space age

Excerpt from the January 14, 1967, issue of Science News

By
10:00am, January 5, 2017
Janus

SCORES OF SATELLITES  Janus, about 181 kilometers in diameter, was imaged in front of Saturn in 2006 by the Cassini spacecraft. The moon is one of at least 62 that circle the ringed planet.

Tenth moon of Saturn

The first natural satellite in the solar system to be discovered since artificial satellites were launched has been found circling Saturn. Dr. Audouin Dollfus of the Observatory of Physical Astronomy at Meudon, France, spotted Saturn’s tenth satellite on three photographs taken in mid-December when the planet’s rings were seen edge-on from earth. — Science News, January 14, 1967

UPDATE:

Saturn’s 10th moon, officially named Janus in 1983, was the first satellite of the ringed planet discovered in the 20th century. It shares an orbit with the moon Epimetheus, seen days after Janus’ discovery, although no one

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