Astronomical Events for August 23rd, 2015
If you live in the southern hemisphere you should grab the chance to see Mercury while you can – and count yourself lucky. An elusive planet that never strays far from the Sun in the sky, it’s currently a difficult sight for most of the northern hemisphere and may only be visible in the south for another week or so.
Meanwhile, for those of us in the north, we can see the just-past first quarter Moon pass by Antares in the early evening sky. As previously mentioned, this red supergiant star never rises very high above the horizon from the United Kingdom and observers there will need an unobstructed view of the horizon to see it. Being low, the thicker atmosphere will cause the star to flicker, giving the red heart of the Scorpion the beat it deserves.
Images courtesy of Mobile Observatory.
03:00 UT – Mercury fades to magnitude 0.0. (71% illuminated, diameter 6.0”. Leo, evening sky.)
18:42 UT – The just-past first quarter Moon passes Antares. (Naked eye, Scorpius, evening sky. See image above.)
Mercury leaves Leo and enters Virgo. (71% illuminated, magnitude 0.0, diameter 6.0”. Evening sky.)
The Southern Delta Aquariid meteor shower ends. A maximum zenith hourly rate: 16. (Naked eye, Aquarius, all night but best in the pre-dawn sky.)
Events in bold involve objects and/or events that are visible with the naked eye.
All times are in Universal Time (UTC). To convert the time to your timezone, click here.
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