The Sky over the Mornington Peninsula — December 2137
Highlights this month
- 3TueVenus in superior conjunction with the Sun — lost in the glare. (1:22am)
- 5ThuThe Moon passes Mars — 3° apart. (10:30pm)
- 6FriMercury at greatest morning elongation (20° from the Sun, mag −0.5) — best morning apparition. (3:51am)
- 9MonJupiter in superior conjunction with the Sun — lost in the glare. (6:24pm)
- 14SatGeminids meteor shower peaks (up to 150/hr). A thin 3% Moon leaves the sky dark.
- 22SunSummer solstice.
- 22SunUrsids meteor shower peaks (up to 10/hr). A bright 77% Moon interferes badly this year.
Sun & twilight
| Date | Sunrise | Sunset | Day length | Astro. dark begins | ends |
|---|---|---|---|---|---|
| Sun 1 | 5:50am | 8:27pm | 14h 37m | 10:20pm | 3:58am |
| Tue 10 | 5:50am | 8:35pm | 14h 46m | 10:30pm | 3:54am |
| Fri 20 | 5:52am | 8:42pm | 14h 50m | 10:39pm | 3:55am |
| Tue 31 | 5:59am | 8:46pm | 14h 47m | 10:42pm | 4:03am |
Days lengthen by about 10 minutes over the month.
The Moon
- Last QuarterFri 6, 5:58am
- New MoonFri 13, 9:19am
- First QuarterFri 20, 12:41am
- Full MoonFri 27, 7:18pm
Apogee 2 Dec (405,600 km) · Perigee 14 Dec (359,500 km) · Apogee 30 Dec (406,200 km)
The planets
Rise/set for mid-month at The Briars.
| Planet | In | Mag | Rise | Transit | Set | Best |
|---|---|---|---|---|---|---|
| Mercury | Sco | −0.6 | 4:48am | 11:58am | 7:07pm | Hidden |
| Venus | Oph | −3.8 | 6:03am | 1:28pm | 8:53pm | Hidden |
| Mars | Leo | 0.5 | 1:15am | 6:49am | 12:24pm | Morning |
| Jupiter | Oph | −1.6 | 5:36am | 12:55pm | 8:14pm | Hidden |
| Saturn | Sgr | 0.5 | 8:10am | 3:24pm | 10:39pm | Hidden |
| Uranus | Vir | 5.5 | 2:12am | 8:25am | 2:38pm | Morning |
| Neptune | Oph | 8.0 | 5:02am | 12:12pm | 7:21pm | 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 thin 3% Moon leaves the sky dark.
- Ursids — peaks 22 December, radiant in Ursa Minor (up to 10/hr). A circumpolar northern shower whose radiant never rises from Victoria. A bright 77% Moon interferes badly this year.
The solar system — December 2137
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 14 September 2026.