With the total eclipse, it'll be a royal spectacle indeed: "a 'super blue blood" Moon.
Also, because it's the last full moon of the year, it's called a "Frost" moon, or "Cold" moon.
By some measures, Sunday night's full moon is the only supermoon of 2017. The next time the moon will come that close to the Earth will be on November 25, 2034. The Moon's orbit around our planet is tilted so it usually falls above or below the shadow of the Earth. "As the moon goes round the Earth, its distance from the Earth keeps changing", he said. As a result, the moon appears to be up to 14 percent larger and 30 percent brighter during a supermoon. Supermoons typically appear about 30 percent brighter than the usual moon. This is because the previous two were around the time of a new moon, which isn't visible in the sky.
But the astronomer warned that as use of the nickname "supermoon" grows, so do expectations.
After 11 months without a supermoon - that's actually just a popular nickname, not an astronomical term - the moon will light up the sky Sunday and again on January 2 and 31.
While the moon is undoubtedly both bigger and brighter than usual, our eyes tend to trick us into seeing the moon as larger than it truly is. If you want to celebrate the year's most super supermoon as a holiday for moongazers, I don't see anything wrong with that. Even more so if it's a supermoon. This effect is termed as "moon illusion".
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An image of the moon taken by NASA's Lunar Reconnaissance Orbiter is shown in two halves to illustrate the difference between the apparent size of a supermoon (left) and a "micromoon" (right).
This optical illusion also occurs when watching the supermoon immediately after sunset (or before sunrise).
2017's only supermoon will begin around 7 p.m. CST on Sunday night.
"Often I find when the moon is near the horizon I have a better chance of incorporating it with a landmark or person, but there are no rules and sometimes a tall object such as the Washington Monument here in D.C. can be used when the moon is at a very high angle".
"The supermoon is a 16-inch pizza compared with a 15-inch pizza", he says. "Supermoons aren't rare, but they're not an everyday occurrence either".