Mercury is at greatest eastern elongation, which means it is its furthest distance from the Sun and visible in the evening twilight after sunset. Look for it close to Venus above the south-western horizon.
(Click on an image to enlarge.)
Images Courtesy of Mobile Observatory.
20:30 UT – Mercury reaches Greatest Eastern Elongation (57% illuminated, magnitude -0.6, diameter 6.8”. Capricornus, evening sky.)
The bright star Pollux culminates at midnight tonight. (Magnitude 1.1. Gemini, all night.)
The open star clusters M46 and M93 both culminates at midnight tonight. (M46: magnitude 6.1. M93: magnitude 6.0. Puppis, all night.)
Events in bold involve objects and/or events that are easily visible with the naked eye.
All times are in Universal Time (UTC). To convert the time to your timezone, click here.
Learn more about every upcoming astronomical event in 2015 An Astronomical Year (Kindle eBook) and The Astronomical Almanac (2015-2019) (Kindle eBook) and The Astronomical Almanac (2015-2019) (Paperback Edition).
The Amateur Astronomer’s Notebook allows astronomers to log 150 observing sessions and includes an appendix of hundreds of suggested deep sky objects.