What’s in the Sky in September

September all times AEST

  • 1st Mars is setting just after the Sun now on it’s was to conjunction, on the opposite side of the Sun to Earth  in Early October.
  • 7th Saturn is Mag.o.3 rising at 14:54hr  and transiting at 21:59hrs   setting at 05:04hrs  on the 8th, distance from Earth is 1,364,628.100km and is moving away from the Earth. The tilt of the North Pole towards Earth is 19.1114 degrees
  • 7th Venus is an evening object setting at  morning object rising at 04:54hr, mag. -4.0, Dist. 190,299,434km. 81.44% illuminated.
  • 7th Jupiter is rising at 14:19hrs, transiting at 23:08hrs, setting at 05:56hrs on the 8th. Mag. -2.8 and moving away from Earth now. Distance from Earth is 607,636,986km. The surface gravity on Jupiter is 2.53  x Earth’s gravity. Orbital Period is 11.86 years. Rotaion Period is 9hrs 55m 41s. Tilt of Nth Pole towards Earth is 0.6904 degrees.




  • 10th Mercury followed by Spica,Venus and a 3.5 day old Moon set together about 9pm.
  • 11th Moon at Perigee 20:02hrs  distance from Earth 368,465.0km.
  • 23rd Southward Equinox 05:22hrs AEST The Sun is now heading into the Southern Hemisphere and for a point time, The Sun crosses the Celestial Equator which is directly above the Equator on the surface of Earth.  The length of day from sunset to sunrise is ~ 12 hours sunrise 06:11hrs sunset 18:23hrs today.
    The Parker Solar Probe Team Sheds New Light on Structure, Behavior of Inner Solar System Dust. The best time to observe this dust known as the Zodiacal Light for here in the Southern Hemisphere, is around the Spring Equinox which falls this year on 23rd September at 5.22am AEST. So a couple of days either side you can look for it.
    You do need a dark sky to see the zodiacal light so head to the darkest sky you can reach and look just after sunset. Turn off unnecessary lighting to help keep the night dark.
  • 26th Daylight Savings begins. AEDT Time.
  • 27th  Moon at Apogee  08:45hrs AEDT distance from Earth 404,640.1km.

The Ozone hole is larger than usual for this time of the year. This years hole is growing quickly and is larger than 75% of ozone holes at this stage in the season since 1979. This hole is similar to the one in 2020 which was one of the longest and deepest since 1979. Special attention is needed to understand why this is happening. The Ozone hole has typically grown to a mximum of 20 million sq km. Over all, the hole is slowly reducing over many years as the damage caused by CFCs which are now banned in 197 countries, is slowly dissipated, probably around 2060-2070’s. 16th September below shows the levels of Ozone for the day. The chart is produced daily on the Copernicus Atmospheric Monitoring Service, link on image.

This map is centered on the Antarctic region. Areas coloured yellow, orange and red depict high ozone values, whereas green and blue areas show low values. The solid black line is the 220 DU contour, which is commonly used to define the area of the ozone hole.