Stock Market

  Stock Market





Mercury as Autumn Evening Star

Panorama of the western sky with Mercury and the Moon as seen from Chicago 30 minutes after sunset from 2018 OCT 12 to NOV 21 - See article below.

Mercury - Elongations & Altitudes - 2018-19

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

Mercury 02 Mercury 03 Mercury 04


Elusive Mercury will commence its evening apparition in the western sky after sunset following its superior conjunction behind the Sun on 2018 SEP 20. Due to the autumn positioning of the ecliptic after sunset, this should be a poor apparition for observers north of the the tropics but a fine one elsewhere.

   On 2018 NOV 06, Mercury will attain its Greatest Eastern Elongation of 23.3°. By the standard of 30 minutes after sunset for Chicago, it will reach its highest altitude of 3.8° on NOV 10. Through a telescope on NOV 11, Mercury will be seen in dichotomy, i.e. 50% illuminated like a Half Moon. Prior to that it will appear gibbous and afterward as a crescent. Mercury will begin retrograde motion in right ascension on NOV 16. While decreasing in brilliance, it will fall to inferior conjunction between Earth and Sun on NOV 26.

   Mercury will appear near other bright planets and stars on the following dates: Venus 2018 OCT 15, Jupiter OCT 28 & Antares NOV 09.

   The Moon will appear near Mercury on 2018 NOV 09 without an occultation.

NOTE: Event dates in this article are for North American Central Time at those moments nearest to 30 after sunset for Chicago.

Mercury Angular Diameter - 2018-19

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

Mercury Illumination Phase - 2018-19

Graph of the percentage of Mercury’s apparent disk illuminated

Mercury Stellar Magnitude - 2018-19

Graph of the brightness of Mercury measured in stellar magnitude

Mercury 05


© Curt Renz

Mercury 01

Mercury Transits Sun - 2019 NOV 11

Previews of the apparent path of Mercury across the Sun Geocentric view and as seen from various cities

You appear to be ad-blocking our site. Our site is best experienced with ad-blocking disabled. This can be done for this site while continuing to ad-block other sites. Your support for this site is much appreciated.

Affiliate Banner