Jupiter, Venus and Sirius still as triangle, Moon

Event Date: September 10th
Time: 6:00 AM


Brief

For over a month, I have talked about the Venus/Jupiter/Sirius (V/J/S) "triangle" in the east, rising before Sunrise.  Now, as Venus continues to quickly move west to east, the celestial bodies has passed their isosceles configuration, and the triangle shape is starting to appear more stretched out.  Since Jupiter moves much more slowly and will start its retrograde next month, the means a faster separation between it and Venus.  Here are the three below, with a waning crescent Moon almost in line between the two planets.

click on image to enlarge: courtesy of Starry Night Pro Plus, version 6.4.3, by Simulation Curriculum Corp.

Detailed

As Venus speeds up and Jupiter slows down, Sirius of course remains fixed, disregarding proper motion.  Eventually as the year finishes, we will see more of an arc-shape than a triangle.  Therefore, enjoy the shape while it lasts, and don't forget that we still have the Vega/Deneb/Altair (V/D/A) triangle of stars setting in the west at the time that these three eastern ones come up. 
   As for the Moon, we saw it near Jupiter earlier in the week, and it will pass by Venus for a fine pairing on the morning of the 12th.  Although they will be a few degrees separated, both will be easily visible for a few hours before Sunrise.  As a waning crescent, the Moon will be helped by the excellent geometry of the eastern morning sky to be visible along with Venus.  Both bodies are still far enough north of the Sun, along with their separations from our star.