Tuesday, September 05, 2017
The Sky This Week - Thursday September 7 to Thursday September 14
The Last Quarter Moon is Wednesday, September 13. The Moon is at perigee, when it is closest to the Earth, on the 14th.
Similar views will be seen elsewhere in Australia at the equivalent local time (60 minutes after sunset). (click to embiggen).
Jupiter is setting mid evening and is above the western horizon in the early evening at full dark. It is close to the bright star Spica, the brightest star in the constellation of Virgo. Over the week Jupiter Moves closer to Spica and on the 11th the pair are at their closest.
Opposition, when Jupiter is biggest and brightest as seen from Earth, was on April the 8th. Jupiter is rising before the sun sets and is visible until just before midnight. Jupiter is a good telescopic target from astronomical twilight on, and the dance of its Moons is visible even in binoculars. The following Jupiter events are in AEST.
Fri 8 Sep 19:28 GRS: Crosses Central Meridian Sat 9 Sep 19:42 Io : Transit Begins T Sat 9 Sep 20:27 Io : Shadow Transit Begins ST Sun 10 Sep 19:59 Io : Reappears from Eclipse Tue 12 Sep 19:35 Gan: Transit Ends Tue 12 Sep 20:11 Gan: Shadow Transit Begins S Wed 13 Sep 18:38 GRS: Crosses Central Meridian Wed 13 Sep 19:28 Eur: Shadow Transit Begins ST Wed 13 Sep 20:28 Eur: Transit Ends S
Mercury is lost in the twilight.
The inset shows the telescopic view of Saturn at this time. Similar views will be seen elsewhere in Australia at the equivalent local time. (90 minutes after sunset, click to embiggen).
Saturn was at opposition on the 15th, when it was biggest and brightest in the sky as seen from earth. Saturn is visible all night long. Saturn is a good telescopic target from 7:30 pm until midnight. It is poised above the dark rifts in the Milky Way and is in a good area for binocular hunting. Although still high in the early evening sky, Saturn begins to sink into the western evening skies as the week progresses. Saturn's rings are visible even in small telescopes and are always good to view.
The constellation of Scorpio is a good guide to locating Saturn. The distinctive curl of Scorpio is easy to see above the north-western horizon, locate the bright red star, Antares, and the look to the left of that, the next bright object is Saturn.
Similar views will be seen throughout Australia at the equivalent local time (that is 60 minutes before sunrise, click to embiggen).
Venus is lowering in the morning sky and is visible in telescopes as a "Gibbous Moon". This week Venus forms a triangle with Procyon and Sirius.It is becoming hard to see Venus in the early twilight, but it is still brilliant enough to be obvious shortly before sunrise.
Mars is still lost in the twilight.
Printable PDF maps of the Eastern sky at 10 pm AEST, Western sky at 10 pm AEST. For further details and more information on what's up in the sky, see Southern Skywatch.
Cloud cover predictions can be found at SkippySky.
Here is the near-real time satellite view of the clouds (day and night) http://satview.bom.gov.au/
Labels: weekly sky