Encke’s gap

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Encke’s gap

astronomy

Also known as: Encke’s Division

Learn about this topic in these articles:

discovery

In Johann Franz Encke
…known for his discovery of Encke’s Division, in the outermost ring of Saturn. From observations of the transits of Venus recorded in 1761 and 1769, he derived a value for the solar parallax (in effect, for the Sun’s distance from the Earth) that, at 8″.57, is close to the presently…
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Saturn’s ring system

In Saturn: The ring system
…of the B ring; the Encke gap (2.21 Saturn radii), a gap in the outer part of the A ring; and the Keeler gap (2.26 Saturn radii), almost at the outer edge of the A ring. Of these gaps, only Encke was known prior to spacecraft exploration of Saturn.
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