The Sky over the Mornington Peninsula — September 2011
Highlights this month
- 3SatMercury at greatest morning elongation (18° from the Sun, mag −0.3) — best morning apparition. (3:47pm)
- 17SatThe Moon passes Jupiter — 5° apart. (2:01am)
- 23FriSpring equinox.
- 23FriThe Moon passes Mars — 5° apart. (3:51pm)
- 26MonUranus at opposition — closest and brightest of the year, up all night in Pisces (mag 5.8). (10:18am)
- 29ThuMercury in superior conjunction with the Sun — lost in the glare. (6:02am)
Sun & twilight
| Date | Sunrise | Sunset | Day length | Astro. dark begins | ends |
|---|---|---|---|---|---|
| Thu 1 | 6:43am | 5:58pm | 11h 15m | 7:26pm | 5:15am |
| Sat 10 | 6:29am | 6:05pm | 11h 36m | 7:33pm | 5:02am |
| Tue 20 | 6:14am | 6:14pm | 12h 00m | 7:42pm | 4:46am |
| Fri 30 | 5:58am | 6:23pm | 12h 25m | 7:52pm | 4:29am |
Days lengthen by about 70 minutes over the month.
The Moon
- First QuarterMon 5, 3:38am
- Full MoonMon 12, 7:27pm
- Last QuarterTue 20, 11:39pm
- New MoonTue 27, 9:15pm
Apogee 15 Sep (406,100 km) · Perigee 28 Sep (357,200 km)
The planets
Rise/set for mid-month at The Briars.
| Planet | In | Mag | Rise | Transit | Set | Best |
|---|---|---|---|---|---|---|
| Mercury | Leo | −1.3 | 6:01am | 11:34am | 5:08pm | Hidden |
| Venus | Vir | −3.7 | 6:48am | 12:47pm | 6:47pm | Hidden |
| Mars | Gem | 1.4 | 3:54am | 8:45am | 1:35pm | Morning |
| Jupiter | Ari | −2.5 | 9:56pm | 3:19am | 8:37am | Morning |
| Saturn | Vir | 0.7 | 7:34am | 1:50pm | 8:06pm | Evening |
| Uranus | Psc | 5.8 | 6:55pm | 12:59am | 7:00am | Morning |
| Neptune | Aqr | 7.8 | 4:06pm | 10:48pm | 5:34am | Evening |
The solar system — September 2011
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 15 July 2026.