The Sky over the Mornington Peninsula — December 2128
Highlights this month
- 3FriUranus is stationary — begins retrograde (westward) motion. (7:02pm)
- 9ThuMercury at greatest evening elongation (21° from the Sun, mag −0.4) — best evening apparition. (10:58am)
- 11SatVenus at greatest evening elongation (47° from the Sun, mag −4.4) — best evening apparition. (11:29am)
- 14TueGeminids meteor shower peaks (up to 150/hr). A 58% Moon washes out fainter meteors for part of the night.
- 17FriThe Moon passes Saturn — 2° apart. (1:13pm)
- 17FriMercury is stationary — begins retrograde (westward) motion. (7:26pm)
- 19SunThe Moon passes Mars — 4° apart. (12:25am)
- 22WedSummer solstice.
- 22WedUrsids meteor shower peaks (up to 10/hr). A thin 0% Moon leaves the sky dark.
- 25SatThe Moon passes Venus — 2° apart. (6:08pm)
- 26SunThe Moon passes Jupiter — 0.3° apart. (10:56pm)
- 27MonMercury in inferior conjunction with the Sun — lost in the glare. (8:54am)
Sun & twilight
| Date | Sunrise | Sunset | Day length | Astro. dark begins | ends |
|---|---|---|---|---|---|
| Wed 1 | 5:50am | 8:27pm | 14h 37m | 10:20pm | 3:58am |
| Fri 10 | 5:50am | 8:35pm | 14h 46m | 10:31pm | 3:54am |
| Mon 20 | 5:52am | 8:42pm | 14h 50m | 10:39pm | 3:55am |
| Fri 31 | 5:59am | 8:46pm | 14h 47m | 10:42pm | 4:03am |
Days lengthen by about 10 minutes over the month.
The Moon
- Full MoonTue 7, 5:56am
- Last QuarterWed 15, 11:23am
- New MoonWed 22, 10:18am
- First QuarterWed 29, 2:26am
Apogee 10 Dec (406,000 km) · Perigee 23 Dec (357,600 km)
The planets
Rise/set for mid-month at The Briars.
| Planet | In | Mag | Rise | Transit | Set | Best |
|---|---|---|---|---|---|---|
| Mercury | Sgr | −0.1 | 7:14am | 2:39pm | 10:03pm | Hidden |
| Venus | Cap | −4.5 | 9:29am | 4:38pm | 11:46pm | Evening |
| Mars | Lib | 1.6 | 3:22am | 10:07am | 4:53pm | Morning |
| Jupiter | Aqr | −2.0 | 11:40am | 6:15pm | 12:54am | Evening |
| Saturn | Vir | 0.7 | 2:42am | 9:01am | 3:21pm | Morning |
| Uranus | Leo | 5.4 | 12:26am | 5:47am | 11:07am | Morning |
| Neptune | Lib | 8.0 | 4:00am | 10:54am | 5:48pm | 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 58% 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 thin 0% Moon leaves the sky dark.
The solar system — December 2128
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 12 September 2026.