The Sky over the Mornington Peninsula — December 2149
Highlights this month
- 1MonVenus in inferior conjunction with the Sun — lost in the glare. (3:10pm)
- 7SunMercury in inferior conjunction with the Sun — lost in the glare. (10:07am)
- 14SunJupiter in superior conjunction with the Sun — lost in the glare. (4:36am)
- 14SunGeminids meteor shower peaks (up to 150/hr). A bright 99% Moon interferes badly this year.
- 15MonThe Moon passes Saturn — 4° apart. (5:15am)
- 16TueSaturn at opposition — closest and brightest of the year, up all night in Taurus (mag −0.6). (12:22pm)
- 17WedMercury is stationary — resumes direct (eastward) motion. (3:54am)
- 21SunVenus is stationary — resumes direct (eastward) motion. (8:19am)
- 22MonSummer solstice.
- 22MonUrsids meteor shower peaks (up to 10/hr). A 46% Moon washes out fainter meteors for part of the night.
- 25ThuNeptune in superior conjunction with the Sun — lost in the glare. (11:58pm)
- 26FriMercury at greatest morning elongation (22° from the Sun, mag −0.4) — best morning apparition. (6:48am)
Sun & twilight
| Date | Sunrise | Sunset | Day length | Astro. dark begins | ends |
|---|---|---|---|---|---|
| Mon 1 | 5:50am | 8:27pm | 14h 37m | 10:20pm | 3:58am |
| Wed 10 | 5:50am | 8:35pm | 14h 46m | 10:31pm | 3:54am |
| Sat 20 | 5:52am | 8:42pm | 14h 50m | 10:39pm | 3:55am |
| Wed 31 | 5:59am | 8:46pm | 14h 47m | 10:42pm | 4:03am |
Days lengthen by about 10 minutes over the month.
The Moon
- First QuarterMon 8, 4:43pm
- Full Moon SupermoonMon 15, 8:16am
- Last QuarterMon 22, 6:59am
- New MoonTue 30, 12:04pm
Perigee 14 Dec (357,500 km) · Apogee 27 Dec (406,000 km)
The planets
Rise/set for mid-month at The Briars.
| Planet | In | Mag | Rise | Transit | Set | Best |
|---|---|---|---|---|---|---|
| Mercury | Sco | 0.6 | 5:04am | 12:08pm | 7:11pm | Hidden |
| Venus | Sco | −4.3 | 4:43am | 11:47am | 6:50pm | Hidden |
| Mars | Oph | 1.5 | 5:14am | 12:34pm | 7:55pm | Hidden |
| Jupiter | Oph | −1.6 | 5:50am | 1:10pm | 8:30pm | Hidden |
| Saturn | Tau | −0.6 | 8:29pm | 1:22am | 6:10am | All night |
| Uranus | Sco | 5.7 | 4:40am | 11:52am | 7:04pm | Hidden |
| Neptune | Sgr | 8.0 | 6:41am | 1:59pm | 9:16pm | 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 99% 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 46% Moon washes out fainter meteors for part of the night.
The solar system — December 2149
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 22 September 2026.