Event

Look for the planet Mercury low above the western horizon after sunset on June 23; binoculars and an unobstructed  view will certainly help! Low as it is, this is still the the highest position that Mercury can be spotted for 2019.

Find it low in the western horizon, close to the much dimmer and red Mars. This is your best chance this year to spot Mercury in the evening, and nearly your last chance to see Mars. For an additional observing challenge, look for these planets in the days leading up to Mercury's greatest western elongation, as these planets will swap positions! The two smallest planets of our solar system pass close to each other the evenings of June 17-18, coming within just ¼ degree, or half the width of a full Moon, as they do their twilight dance.


chart showing the positions of Mars and Mercury

For more information and tips on how to spot this elusive naked-eye planet, check out the guide on EarthSky. You can also sign up for monthly stargazing tips from the Night Sky Notes monthly article. 

Want to join group of folks for a star party? Find a member club near you using our club map, and check out astronomy events near you with our events page.  We wish you clear, dark skies!
 

Date: Sunday, June 23, 2019

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