Cold Moon is full 12/13/16

The Sky This Week, 2016 December 6 – 13

The Moon brightens the evening sky this week, waxing toward the Full phase as she courses through the late autumn and early winter constellations. Full Moon occurs on the 13th at 7:06 pm Eastern Standard Time. December’s Full Moon is known as the Moon Before Yule in the skylore of European Christianity. Other names, such as the Cold Moon, Big Moon, and Long Night Moon, reflect the influence of Celtic and Native American lore. December’s Full Moon occurs near Luna’s most northerly declination for the year, flooding the winter landscape with her pale light. This year she appears a bit brighter than usual thanks to the Full phase occurring near the Moon’s close perigee, which falls on the 12th. On the evening of the 12th you’ll find the nearly-full Moon pass through the heart of the Hyades star cluster which forms the “face” of Tauris, the Bull. Watch Luna creep closer to the bright star Aldebaran as the evening passes. At 11:07 pm EST the star will wink out as the Moon’s limb covers it. You can see it re-appear at 12:21 am.

The Full Moon washes out the annual Geminid meteor shower, which peaks on the night of the 13th. This is normally one of the year’s most reliable showers, and under dark skies it usually produces one or two “shooting stars” per minute. The meteors are generally slower than the August Perseids, and the radiant, in the constellation of Gemini, is well-placed after around 10:00 pm. Bright moonlight will hamper the number of meteors that the average observer will see this year, but a patient observer may be able to spot 20 or so per hour, even from urban locations.

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