Competitive Exams: Current Affairs 2011: Supermoon

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  • The Moon's distance varies each month between approximately 357, 000 (perigee) kilometers and 406, 000 km (apogee) due to its elliptical orbit around the Earth.

  • Full moon at perigee is 12% larger and brighter than an average full moon. This conicidence is called supermoon

  • Technical name for a supermoon is the perigee-syzygy of the Eartho Moon-Sun system.

  • The supermoon event, occurred on 19 march 2011 was around 14 per cent bigger and 30 per cent brighter than the other normal full moons.

  • The phenomenon was special, as the moon came closest to the earth in 18 years.

  • The supermoon phenomenon occurred in 1955, 1974, 1992 and 2005.

Courtesy: The Hindu and Times of India

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