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Previously, the Moon hid Antares on March 3 and May 24. After this event, the Moon will continue to cross paths with Antares on a monthly basis until February 2010. But many of these upcoming Antares occultations will favor localities south of the equator. Not until June 2009, will most North Americans get another opportunity to watch the Moon hide Antares.
In the table below, we provide a timetable for six selected locations, giving the local times and the Moon's altitude for both Antares' disappearance and reappearance. When a time is listed as p.m., it is for Sunday night, July 17. If a time is listed as a.m., it is for Monday morning, July 18. A single asterisk (*) means the event occurs during evening twilight. A double asterisk (**) means the event occurs before sunset. Nonetheless, if the sky is clear with no significant haze, you should be able to see the Moon low in the south-southeast sky and be able to discern Antares with a small telescope. This information is based on predictions by IOTA and has been rounded off to the nearest minute.As previously noted, for the rest of North America, this will be a very close approach of the Moon to Antares (called a conjunction). The Moon, moving around the Earth in an easterly direction at roughly it's own diameter each hour will seem to creep slowly toward and ultimately pass just below the ruddy star. Even though much of North America will miss out on the occultation, it will still be most interesting to watch with binoculars or a small telescope to see how closely Antares will appear to glide just above the Moon.
Coming up this weekend, it’s the December full moon! In North America, we call this full moon by one of several nicknames: the Full Cold Moon, Moon Before Yule, or the Long Night Moon. Whichever name you use, the moon will cross high overhead in the Northern Hemisphere’s sky (while making a low arc from the Southern Hemisphere). For all of us, it’ll light up these chilly nights. Our nearest neighbor will appear to be full throughout this weekend. But the exact moment it’s full is 4:35 UTC on December 19 (10:35 p.m. CST on December 18). That’s the moment when the moon is directly opposite the sun as seen from Earth. It’s when we see the entire, fully illuminated day side of the moon.This full moon happens one day after it reaches the farthest point in its orbit around Earth, called apogee. At apogee in December, the moon is 252,000 miles (400,000 km) away. That’s about 12,000 miles (19,000 km) more than the average moon-distance from Earth. As a result, on the night of full moon – December 18-19, 2021 – the moon is measurably smaller in our sky than usual. Your eye probably won’t notice any difference, although the moon may appear less bright than you remember it at other months this past year. Many skywatchers are familiar with the term supermoon. That’s a particularly large and bright full moon, near perigee, or its closest point to Earth. December’s full moon is the opposite of a supermoon. We might call it a mini-moon or micromoon. (Source: earthsky.org)