The Sky for the Month

The Sky over the Mornington Peninsula — December 2159

Computed for The Briars, Mt Martha. Times are local (Melbourne).

Highlights this month

  • 3MonMercury in superior conjunction with the Sun — lost in the glare. (1:36pm)
  • 14FriGeminids meteor shower peaks (up to 150/hr). A thin 17% Moon leaves the sky dark.
  • 21FriJupiter and Saturn in conjunction — 1° apart. (5:21am)
  • 22SatSummer solstice.
  • 22SatUrsids meteor shower peaks (up to 10/hr). A bright 90% Moon interferes badly this year.

Sun & twilight

DateSunriseSunsetDay lengthAstro. dark beginsends
Sat 15:50am8:27pm14h 36m10:19pm3:59am
Mon 105:49am8:35pm14h 45m10:30pm3:55am
Thu 205:52am8:42pm14h 50m10:38pm3:55am
Mon 315:58am8:46pm14h 47m10:41pm4:02am

Days lengthen by about 11 minutes over the month.

The Moon

  • Last QuarterSun 2, 2:25pm
  • New MoonMon 10, 5:43am
  • First QuarterTue 18, 11:10am
  • Full Moon SupermoonTue 25, 10:03am

Apogee 13 Dec (406,000 km) · Perigee 26 Dec (357,600 km)

The planets

Rise/set for mid-month at The Briars.

PlanetInMagRiseTransitSetBest
MercurySgr−0.96:12am1:43pm9:15pmHidden
VenusLib−3.84:05am11:00am5:57pmHidden
MarsAqr0.511:47am6:21pm12:57amEvening
JupiterVir−1.53:23am10:06am4:49pmMorning
SaturnVir0.53:30am10:09am4:49pmMorning
UranusSgr5.87:30am2:50pm10:10pmHidden
NeptuneSgr8.08:20am3:31pm10:42pmHidden

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 17% 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 90% Moon interferes badly this year.

The solar system — December 2159

Evening sky Morning sky Up much of the night Lost in the Sun’s glare

Generated automatically from the MPAS sky engine on 1 October 2026.