Mercury 01
Mercury 07
Mercury 06
Mercury 08

Mercury as May-June Evening Star

Panorama of the western sky with Mercury and the Moon as seen from Chicagoland 30 minutes after sunset from 2014 MAY 01 to JUN 12 - See article below.

Mercury - Elongations & Altitudes - 2014

The planet’s elongations from the Sun and altitudes above the horizon as viewed from latitude N 42°



Mercury will soon commence its apparition as an evening star following its superior conjunction behind the Sun on 2014 APR 25. This will be the finest Mercury apparition of the year for observers north of the tropics, due to the fairly wide angle between the ecliptic and horizon at sunset.


  Mercury will appear in dichotomy (50% illuminated like a Half Moon) on MAY 19. Before then it will appear gibbous and afterward as a crescent. By the standard of 30 minutes after sunset, it will attain its highest altitude of 13.6° for Chicagoland observers on MAY 22. Greatest eastern elongation of 22.7° will be reached on MAY 24. Mercury will begin apparent retrograde motion on JUN 06. While decreasing in brightness, it will fall to inferior conjunction between Earth and Sun on JUN 19.


  Mercury will not appear near other bright planets during this apparition. However, it will appear near prominent stars on these dates: Alcyone (Pleiades) MAY 07, Aldebaran MAY 12 and Elnath May 21. The Moon will appear to pass near Mercury on MAY 30.


NOTE: Event dates are for North American Central Time at those moments nearest to 30 minutes after sunset for Chicagoland.


    © Curt Renz


Mercury Angular Diameter - 2014

Graph of the apparent angular diameter of Mercury measured in arcseconds  -  Distance in AU = 6.68 / angular diameter

Mercury Illumination Phase - 2014

Graph of the percentage of Mercury’s apparent disk illuminated

Mercury Stellar Magnitude - 2014

Graph of the brightness of Mercury measured in stellar magnitude

Mercury 04

Transit of Mercury - 2016 MAY 09

Preview of the apparent path of Mercury across the Sun in horizontal (alt-az) coordinates as viewed from Chicago on 2016 MAY 09

Tran 08

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