The Sky over the Mornington Peninsula — December 2151
Highlights this month
- 4SatUranus in superior conjunction with the Sun — lost in the glare. (3:34pm)
- 14TueGeminids meteor shower peaks (up to 150/hr). A 32% Moon washes out fainter meteors for part of the night.
- 22WedSummer solstice.
- 22WedUrsids meteor shower peaks (up to 10/hr). A bright 97% Moon interferes badly this year.
- 30ThuNeptune in superior conjunction with the Sun — lost in the glare. (6:40pm)
Sun & twilight
| Date | Sunrise | Sunset | Day length | Astro. dark begins | ends |
|---|---|---|---|---|---|
| Wed 1 | 5:50am | 8:27pm | 14h 36m | 10:19pm | 3:59am |
| Fri 10 | 5:49am | 8:35pm | 14h 45m | 10:30pm | 3:55am |
| Mon 20 | 5:52am | 8:42pm | 14h 50m | 10:38pm | 3:55am |
| Fri 31 | 5:58am | 8:46pm | 14h 47m | 10:42pm | 4:02am |
Days lengthen by about 11 minutes over the month.
The Moon
- Last QuarterWed 1, 9:23am
- New MoonWed 8, 1:31pm
- First QuarterThu 16, 3:37pm
- Full MoonFri 24, 2:02am
- Last QuarterThu 30, 5:47pm
Apogee 14 Dec (405,100 km) · Perigee 26 Dec (363,300 km)
The planets
Rise/set for mid-month at The Briars.
| Planet | In | Mag | Rise | Transit | Set | Best |
|---|---|---|---|---|---|---|
| Mercury | Oph | −0.8 | 5:12am | 12:31pm | 7:51pm | Hidden |
| Venus | Lib | −3.8 | 4:03am | 10:58am | 5:54pm | Hidden |
| Mars | Sgr | 1.3 | 6:11am | 1:37pm | 9:03pm | Hidden |
| Jupiter | Cap | −1.9 | 9:56am | 4:55pm | 11:53pm | Evening |
| Saturn | Gem | −0.3 | 10:38pm | 3:34am | 8:26am | Morning |
| Uranus | Oph | 5.7 | 5:12am | 12:30pm | 7:47pm | Hidden |
| Neptune | Sgr | 8.0 | 7:02am | 2:19pm | 9:36pm | 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 32% Moon washes out fainter meteors for part of the night.
- Ursids — peaks 22 December, radiant in Ursa Minor (up to 10/hr). A circumpolar northern shower whose radiant never rises from Victoria. A bright 97% Moon interferes badly this year.
The solar system — December 2151
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.
Looking for an earlier month? Browse all past monthly guides →
Generated automatically from the MPAS sky engine on 24 September 2026.