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A table listing some of the Astronomical Phenomena for December 2015:

Phenomena December

DayEvent
2Moon passes 3 degrees south of Regulus mag +1.4 (12 UT)
3Last quarter Moon (7:41 UT)
4Moon passes 2 degrees south of Jupiter mag -2.0 (6 UT)
5Moon is at apogee 404,801 km or 251,532 miles from Earth (15:00 UT)
6Moon passes 0.1 degrees south of Mars mag +1.5, occultation is visible from Australia, Central and East Africa, Indonesia, Southern India (2:42 UT)
6Moon passes 4.5 degrees north of Spica mag +1.0 (20 UT)
7Moon passes 0.7 degrees north of Venus mag -4.2, occultation is visible from North and Central America (16:56 UT)
9Asteroid (16) Psyche mag +9.4 is at opposition in Taurus
10Moon passes 3 degrees north of Saturn mag +0.6 (14 UT)
10Moon passes 9 degrees north of Antares mag +1.0 (15 UT)
11New Moon (10:30 UT)
11NEO Asteroid 33342 mag +11.3 approaches Earth to within 4.19 million kilometres or 2.60 million miles
12Moon passes 7 degrees north of Mercury mag -0.6 (14 UT)
13Saturn mag +0.6 passes 6 degrees north of Antares mag +1.0 (6 UT)
14Geminids meteor shower peaks (ZHR = 120)
17Moon passes 3 degrees north of Neptune mag +7.9 (8 UT)
18First quarter Moon (15:15 UT)
20Moon passes 1.2 degrees south of Uranus mag +5.8, occultation is visible from Southern South America, Falkland Islands (00:50 UT)
21Moon is at perigee 368,423 km or 228,927 miles from Earth (9:09 UT)
21Mars mag +1.3 passes 4 degrees north of Spica mag +1.0 (12 UT)
22Winter Solstice NH - Summer Solstice SH (4:48 UT)
23Ursids meteor shower peaks (ZHR = 10 - occasionally up to 50)
23Moon passes 0.7 degrees north of Aldebaran mag +0.9, occultation is visible from Europe, Russia, NW Africa, North Asia, eastern Canada (19:33 UT)
25Full Moon (11:12 UT)
25Asteroid (27) Euterpe mag +8.4 is at opposition in Gemini
26Uranus mag +5.8 is stationary in Pisces, afterwards resumes direct motion (10 UT)
27Moon passes 11 degrees south of Pollux mag +1.1 (2 UT)
29Mercury mag -0.6 is at greatest elongation east 19.7 degrees (3 UT)
29Moon passes 3 degrees south of Regulus mag +1.4 (21 UT)
31Moon passes 1.5 degrees south of Jupiter mag -2.1 (18 UT)