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annular eclipse

A Dictionary of Astronomy | 1997 | 299 words | Copyright

annular eclipse A solar eclipse occurring when the Moon is near apogee and its apparent diameter is smaller than that of the Sun, so that a ring, or annulus, of the Sun's disk remains visible at mid-eclipse along the narrow central ground track on the Earth. Annular eclipses can last up to 12m 30s.

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