supermoon
Sign in to savethumb|alt=refer to caption|A juxtaposition of the apparent diameters of a more-average full moon on December 20, 2010 (left), and of the supermoon of March 19, 2011 (right) as viewed from Earth
AI overview
A supermoon occurs when a full moon happens at the point in its orbit closest to Earth, making it appear noticeably larger and brighter in the sky than an average full moon. While supermoons are a visually striking natural phenomenon, their practical effects on Earth are minimal, though they may have a slight influence on tides.
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Article
10 sectionsContents
- Definitions
- Occurrence
- Appearance
- Effects on Earth
- Super Blood Moon
- Annular solar eclipses
- See also
- Notes
- References
- External links
thumb|alt=refer to caption|A juxtaposition of the apparent diameters of a more-average full moon on December 20, 2010 (left), and of the supermoon of March 19, 2011 (right) as viewed from Earth
A supermoon is a full moon or a new moon that nearly coincides with perigee—the closest that the Moon comes to the Earth in its orbit—resulting in a slightly larger-than-usual apparent size of the lunardisk as viewed from Earth. The technical name is a perigee syzygy (of the Earth–Moon–Sun system) or a full (ornew) Moon around perigee. Because the term supermoon is astrological in origin, it has no precise astronomical definition.