The Sky over the Mornington Peninsula — December 2090
Highlights this month
- 3SunMercury in inferior conjunction with the Sun — lost in the glare. (11:54am)
- 8FriThe Moon passes Saturn — 3° apart. (1:14am)
- 13WedMercury is stationary — resumes direct (eastward) motion. (3:22am)
- 13WedSaturn at opposition — closest and brightest of the year, up all night in Taurus (mag −0.6). (10:10pm)
- 14ThuThe Moon passes Mars — 2° apart. (5:21am)
- 14ThuGeminids meteor shower peaks (up to 150/hr). A 49% Moon washes out fainter meteors for part of the night.
- 15FriVenus at greatest morning elongation (47° from the Sun, mag −4.4) — best morning apparition. (11:16pm)
- 17SunThe Moon passes Venus — 1° apart. (10:12pm)
- 21ThuSummer solstice.
- 22FriMercury at greatest morning elongation (22° from the Sun, mag −0.4) — best morning apparition. (1:54am)
- 22FriUrsids meteor shower peaks (up to 10/hr). A thin 2% Moon leaves the sky dark.
- 22FriJupiter in superior conjunction with the Sun — lost in the glare. (9:31pm)
Sun & twilight
| Date | Sunrise | Sunset | Day length | Astro. dark begins | ends |
|---|---|---|---|---|---|
| Fri 1 | 5:50am | 8:28pm | 14h 37m | 10:20pm | 3:58am |
| Sun 10 | 5:50am | 8:36pm | 14h 46m | 10:31pm | 3:54am |
| Wed 20 | 5:52am | 8:42pm | 14h 50m | 10:39pm | 3:56am |
| Sun 31 | 5:59am | 8:46pm | 14h 47m | 10:42pm | 4:03am |
Days lengthen by about 10 minutes over the month.
The Moon
- Full MoonThu 7, 12:21pm
- Last QuarterThu 14, 3:28pm
- New MoonThu 21, 12:29pm
- First QuarterFri 29, 8:42am
Apogee 1 Dec (405,000 km) · Perigee 16 Dec (369,100 km) · Apogee 29 Dec (404,700 km)
The planets
Rise/set for mid-month at The Briars.
| Planet | In | Mag | Rise | Transit | Set | Best |
|---|---|---|---|---|---|---|
| Mercury | Sco | −0.1 | 4:50am | 11:53am | 6:55pm | Hidden |
| Venus | Vir | −4.4 | 3:26am | 10:04am | 4:43pm | Morning |
| Mars | Leo | 0.6 | 1:21am | 7:00am | 12:38pm | Morning |
| Jupiter | Sgr | −1.7 | 6:19am | 1:40pm | 9:02pm | Hidden |
| Saturn | Tau | −0.6 | 8:16pm | 1:10am | 5:59am | All night |
| Uranus | Aqr | 5.9 | 12:11pm | 6:37pm | 1:08am | Evening |
| Neptune | Leo | 7.9 | 12:22am | 5:43am | 11:05am | Morning |
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 49% 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 2% Moon leaves the sky dark.
The solar system — December 2090
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 29 August 2026.