It's a bird. It's a plane. It's... a supermoon?
You read that right. One of the biggest celestial events of the year, the supermoon, is set to peak this Sunday.
Also known as a perigee full moon, Sunday's moon will be the largest supermoon this year, WCPO-TV reported.
"In simple terms, it means the moon will be the biggest and brightest for this year," said 10News Pinpoint Weathercaster Robert Santos. "To casual observes like you and me, it'll be hard to see the supermoon in a casual glance with the naked eye."
According to earthsky.org , a supermoon occurs when the Earth, moon and sun are all in a line called the lunar perigee. For a supermoon to occur, the moon must be in its nearest approach to Earth as it traces its elliptical path around our planet.
But what makes Sunday's supermoon so special is it falls only 22 minutes after the moon reaches perigee, the moon’s closest point to Earth for this month and year. In essence, it will be the closest and largest full moon of the year.
The moon will not be this close again until August 2014.
"The full moon on Sunday will cause a dramatically large range of high and low ocean tides," said Santos. "Starting Friday night through Sunday night, we'll see high tides of a little more than 7 feet at our local beaches during the evening hours between 8-10 p.m. During the morning between 9 and 10 a.m., tides will range between 4 to 5 feet high."
For some context: At perigee, the moon lies only 356,991 kilometers (221,824 miles) away. Two weeks later, on July 7, the moon will swing out to apogee – its farthest point for the month and year – at 406,490 kilometers (252,581 miles) distant.
The moon will turn full at 4:32 a.m. (Pacific Time) Sunday. It will reach its closest point to the Earth 22 minutes earlier and will be visible after the sun sets that evening, Earthsky reports .
So make sure you go outside Sunday night to catch a glimpse of this stellar sight.