Portal:Astronomy/Events/December 2013
† All times in UT unless otherwise specified.
 December 2013
| |||||
|---|---|---|---|---|---|
| Date | Time | Celestial Object | Category | Event | Mathematical Values |
| 01 December | Mercury | Constellation | Mercury enters into the constellation Scorpius | ||
| 03 December | 0:23 | Moon | Lunar phase | New moon | Duration = 29d 10h 52m Lunation= 1125 |
| 16:35 | Moon | Lunistice | Moon at southern lunistice | Declination = +19.6° Direction = Furthest South | |
| 04 December | 10:02 | Moon | Apsis | Moon at perigee | Moon-Earth Distance = 360,063 km |
| 07 December | Earth | Meteor shower | Phoenicids peak | ||
| 19:48 | 2 Pallas | Perihelion | 2 Pallas at perihelion | ||
| 09 December | 21:44 | Moon | Lunar phase | First quarter moon | |
| 15:12 | Moon | Equator crossing | Equator crossing | Direction = North going | |
| 13 December | 10:07 | Moon | Lunar node | Moon at descending node | Direction = North |
| 14 December | Earth | Meteor shower | Geminids peak from Asteroid 3200 Phaethon (1983 TB) | ||
| 15 December | Sun | Constellation | Sun enters into the constellation Sagittarius | ||
| 17 December | 9:29 | Moon | Lunar phase | Full moon | |
| 12:56 | Moon | Lunistice | Moon at northern lunistice | Declination = +19.6° Direction = Furthest North | |
| Uranus | Retrograde motion | Uranus in post retrograde motion in constellation Aries | |||
| 18 December | Uranus | Stationary | Uranus at eastern stationary point | ||
| 19 December | 23:36 | Moon | Apsis | Moon at apogee | Moon-Earth Distance = 406,267 km |
| 20 December | Mercury | Constellation | Mercury enters into the constellation Sagittarius | ||
| 21 December | 17:11 | Earth | Solstice | Earth southward Solstice | |
| Venus | Retrograde motion | Venus in retrograde motion in constellation Capricornus | |||
| Mercury | Mercury at aphelion | ||||
| 22 December | Venus | Stationary | Venus at eastern stationary point | ||
| 24 December | Earth | Meteor shower | Ursids peak | ||
| 14:22 | Moon | Equator crossing | Equator crossing | Direction = South going | |
| 25 December | 13:48 | Moon | Lunar phase | Last quarter moon | |
| 28 December | 0:18 | Moon | Lunar node | Moon at ascending node | Direction = South |
| 29 December | Mercury | Mercury at superior conjunction | |||
| 30 December | Uranus | Quadrature | Uranus at eastern quadrature | ||
| 31 December | 4:47 | Moon | Lunistice | Moon at southern lunistice | Declination = +19.5° Direction = Furthest South |
| 5:39 | Mercury | Transit | Mercury transits Pluto | Elongation to the Sun = 2.1° East Angle Distance = 4°34' South | |