A supermoon is the coincidence of a full moon or a New moon with the closest approach the Moon makes to the Earth on its elliptical orbit, resulting in the largest apparent size of the lunar disk as seen from Earth. The technical name is the perigee-syzygy of the Earth-Moon-Sun system.

supermoon

Onn Monday, 14 November 2016, the moon will be the biggest and brightest it has been in more than 60 years (since 1948), making it a great time to get outside and marvel at the lunar sight for stargazers around the world. So long as the sky is clear of clouds, it should be a great time to get outside and gaze at it or take some photos.

What makes this one special is that the moon is going to be even closer to the Earth than it normally gets, making it a tiny bit bigger than even your average supermoon.

Distance

The Moon’s distance varies each month between approximately 357,000 and 406,000 kilometers (222,000 and 252,000 mi) due to its elliptical orbit around the Earth (distances given are centre-to-centre).

A full moon at perigee is visually larger up to 14% in diameter and shines 30% more light than one at its farthest point, or apogee.

But, anywhere near the city, that difference is likely to be difficult to perceive. And, of course, clouds or haze could wipe out the difference, or indeed cover the moon completely.

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