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1
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Moon near Saturn (morning sky) at 13h UT. Mag. +0.9.
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1
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Mercury at greatest elongation, 22° east from Sun (evening sky) at 16h UT. Mag. -0.4.
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2
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Moon near Spica (morning sky) at 3h UT.
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2
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Venus at its brightest at 11h UT (morning sky). Mag. -4.7.
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2
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Moon near Venus at 18h UT (morning sky).
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5
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New Moon at 17:36 UT. Start of lunation 1088.
• Lunation Number (Wikipedia)
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7
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Moon near Mercury at 7h UT (19° from Sun). Mag. -0.1.
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13
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Moon at apogee (farthest from Earth) at 9h UT (distance 404,406 km; angular size 29.3').
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13
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First Quarter Moon at 13:59 UT.
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13
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Moon near Jupiter at 21h UT. Mag. -2.5.
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14
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Geminid Meteor Shower peaks at 11h UT. Produces bright, medium-speed meteors at its peak (up to 80 meteors/hour). Very favorable viewing conditions this year.
• Observing the Geminids (Gary Kronk)
• The Geminids (IMO)
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19
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Moon near Aldebaran (evening sky) at 23h UT.
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20
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Mercury at inferior conjunction with the Sun at 1h UT. Mercury passes into the morning sky.
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21
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Full Moon at 8:13 UT.
• Full Moon Names (Wikipedia)
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21
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Total Eclipse of the Moon begins at 7:41 UT and ends at 8:53 UT. Mid-eclipse at 8:17 UT. Partial phases begin at 6:33 UT and end at 10:01 UT. Moon will appear red-orange in color during totality (the Earth's shadow). Entire eclipse visible from North America, and eastern Pacific Ocean.
• Total Lunar Eclipse of 2010 Dec 21 (NASA)
• Lunar Eclipses for Beginners (NASA)
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21
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December solstice at 23:43 UT. The time when the Sun reaches the point farthest south of the celestial equator marking the start of winter in the Northern Hemisphere and summer in the Southern Hemisphere.
• December Solstice (Wikipedia)
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24
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Moon near Beehive cluster M44 (morning sky) at 1h UT.
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25
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Moon at perigee (closest to Earth) at 12h UT (368,465 km; 32.7').
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25
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Moon near Regulus (morning sky) at 16h UT.
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28
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Last Quarter Moon at 4:18 UT.
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29
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Moon near Spica (morning sky) at 10h UT.
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31
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Moon near Venus at 15h UT (morning sky).
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All times Universal Time (UT). USA Eastern Standard Time = UT - 5 hours.
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