Sunday's supermoon will be biggest and brightest full moon this year

Sunday's supermoon will be biggest and brightest full moon this year

It will appear its biggest and brightest because of a "moon illusion" effect that's created when you are able to compare the lunar body to other objects for scale, like buildings and foliage.

The supermoon will appear 7 percent larger and 16 percent brighter than the average moon.

So while the two aren't exactly aligned, it will mean the mostly full moon rising Sunday night will be a sight to see.

A supermoon happens when a full moon is at or near its perigee, the point in the moon's orbit when it is closest to Earth. "The difference in distance between these close and far points can be as much as about 30,000 miles".

According to, supermoons will look about 7 percent bigger than an average full moon (and 12 to 14 percent bigger than a full moon at apogee). However, the moon will still appear plenty big when it rises in the eastern sky Sunday evening.

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The exact moment of the full moon is the morning of December 3 at 10:46 a.m. ET, (9:46 a.m. CT, 8:46 a.m. MT, and 6:46 a.m. PT), said. This will be the first and last supermoon of the year. If you do happen to stay inside, you'll have two more chances in January 2018 to catch a supermoon, first on Jan. 2 and again on Jan. 31.

Sunset will take place at 4:28 pm on December 3, hence the full moon and sun won't be visible at the same time in NY.

The moon will be at its brightest above the borough at around 4:47pm.

This supermoon won't be quite as special as last year's.

Still, don't sleep on the supermoon expected Sunday: It's the only one we'll see for all of 2017. "Still, it's a great excuse to just go out and look at the sky", says Nichols. "Then slide your finger up or down to darken or lighten the exposure". "It's a fun way to get involved in science".