The Sky over the Mornington Peninsula — December 2133
Highlights this month
- 4FriSaturn in superior conjunction with the Sun — lost in the glare. (6:16am)
- 6SunVenus in inferior conjunction with the Sun — lost in the glare. (2:41pm)
- 13SunThe Moon passes Mars — 0.3° apart. (1:33pm)
- 14MonGeminids meteor shower peaks (up to 150/hr). A bright 94% Moon interferes badly this year.
- 17ThuThe Moon passes Jupiter — 4° apart. (8:57pm)
- 21MonMars at opposition — closest and brightest of the year, up all night in Taurus (mag −1.7). (5:20pm)
- 22TueSummer solstice.
- 22TueUrsids meteor shower peaks (up to 10/hr). A thin 17% Moon leaves the sky dark.
- 22TueJupiter is stationary — begins retrograde (westward) motion. (4:26pm)
- 26SatVenus is stationary — resumes direct (eastward) motion. (11:57am)
- 27SunUranus is stationary — begins retrograde (westward) motion. (10:28pm)
Sun & twilight
| Date | Sunrise | Sunset | Day length | Astro. dark begins | ends |
|---|---|---|---|---|---|
| Tue 1 | 5:50am | 8:27pm | 14h 37m | 10:19pm | 3:58am |
| Thu 10 | 5:50am | 8:35pm | 14h 46m | 10:30pm | 3:54am |
| Sun 20 | 5:52am | 8:42pm | 14h 50m | 10:39pm | 3:55am |
| Thu 31 | 5:59am | 8:46pm | 14h 47m | 10:42pm | 4:03am |
Days lengthen by about 10 minutes over the month.
The Moon
- First QuarterSat 5, 7:49am
- Full MoonSat 12, 5:21pm
- Last QuarterSat 19, 8:49am
- New MoonSat 26, 10:43pm
Apogee 3 Dec (405,200 km) · Perigee 14 Dec (362,700 km) · Apogee 30 Dec (405,800 km)
The planets
Rise/set for mid-month at The Briars.
| Planet | In | Mag | Rise | Transit | Set | Best |
|---|---|---|---|---|---|---|
| Mercury | Sgr | −0.8 | 6:28am | 2:00pm | 9:33pm | Hidden |
| Venus | Oph | −4.0 | 5:06am | 12:15pm | 7:24pm | Hidden |
| Mars | Gem | −1.7 | 9:19pm | 1:55am | 6:26am | All night |
| Jupiter | Leo | −2.0 | 12:48am | 6:17am | 11:47am | Morning |
| Saturn | Oph | 0.3 | 5:20am | 12:32pm | 7:44pm | Hidden |
| Uranus | Leo | 5.5 | 1:27am | 7:17am | 1:06pm | Morning |
| Neptune | Lib | 8.0 | 4:34am | 11:37am | 6:40pm | Hidden |
Meteor showers
- Geminids — peaks 14 December, radiant in Gemini (up to 150/hr). The richest shower of the year; the radiant reaches a useful altitude after local midnight, so it rewards southern observers well. A bright 94% Moon interferes badly this year.
- Ursids — peaks 22 December, radiant in Ursa Minor (up to 10/hr). A circumpolar northern shower whose radiant never rises from Victoria. A thin 17% Moon leaves the sky dark.
The solar system — December 2133
Evening sky Morning sky Up much of the night Lost in the Sun’s glare
Open the full interactive orrery ↗ — fast-forward, pick any date, toggle the Moon and more.
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Generated automatically from the MPAS sky engine on 13 September 2026.