Year's brightest supermoon coming to OR skies Sunday night

Aaron Brown
November 30, 2017

The effect is most noticeable when the moon rises over an object on the horizon. The word "supermoon" was coined by Richard Nolle, an astrologer, in 1979.

A supermoon occurs when the moon is at its perigee in orbit, or its closest point to the earth.

Sunday's supermoon is the first and last one visible to the naked eye in 2017. It has also been adopted by some with the term micro-moon or mini-moon when the full moon coincides with the apogee.

The moon's orbit around the Earth is not a ideal circle, meaning the distance between the two bodies grows and shrinks as the lunar planet plods eternal laps around us.

In December this year, the full moon and the periodele differ in less than a day.

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According to, the moon will officially reach its fullest point at 8:46 a.m. MT this Sunday December 3.

In the perimeter the Moon will be 357,492 kilometers away from the Earth, while at the time of the full moon a little more (357,987 km). Gurtina Besla, a professor at the Arizona University, said that the phrase "perigee syzygy" refers to the moon being at its closest distance to the Earth, and syzygy refers to the alignment of multiple bodies - the moon, Earth and sun need to be aligned for us to see a full moon.

A supermoon can appear 14 percent larger and 30 percent brighter than a regular full moon. Because of this, the gravity of the Sun pulls the fang closer to the Earth. The moon is approximately 2, 38, 000 miles away from the earth, but on Monday, it will be 2, 22, 135 miles.

Supermoons do not cause extreme flooding, earthquakes or other natural disasters, NASA says.

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