Portal:Astronomy/Events/December 2010
| 1 December, 16:00 | Mercury at greatest eastern elongation |
| 5 December, 17:37 | New moon |
| 6 December | Phoenicids peak |
| 6 December, 23:00 | Moon occults Mars |
| 13 December, 09:00 | Moon at apogee |
| 14 December | Geminids peak |
| 20 December, 01:00 | Mercury at inferior conjunction |
| 21 December, 08:17 | Full moon and total lunar eclipse |
| 21 December, 23:39 | Earth southern solstice |
| 22 December | Ursids peak |
| 25 December, 12:00 | Moon at perigee |
| 27 December | Pluto at superior conjunction |