Venus as the 2017 Morning Star

Panorama of the eastern sky with Venus and the Moon as seen from Chicago 30 minutes before sunrise from 2017 MAR 23 to DEC 12 - See article below.

Venus - Elongations & Altitudes - 2017-18

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

Phases of Venus

Bipolar diagram illustrating the phases of Venus as viewed from Earth through a telescope while Venus orbits the Sun and laps the Earth every 1.6 years

Pentagram of Venus

Diagram of the orbits of Venus and Earth showing how the positions at six successive inferior conjunctions can be connected to draw a pentagram (five-pointed star shape)

Venus 01 Venus 02 Venus 03 Venus 04 Venus 05 Venus 06 Venus 07

                  2017 MORNING APPARITION OF VENUS

This apparition has essentially ended as Venus becomes overwhelmed by the glare of the Sun prior to superior conjunction on 2018 JAN 08. Venus had been presenting its apparition as the brilliant Morning Star in the eastern sky before sunrise following its inferior conjunction by right ascension between Earth and Sun on 2017 MAR 22.  

    Venus resumed apparent direct motion in right ascension on 2017 APR 13. Greatest brilliance at magnitude -4.5 was expected around APR 29. Greatest Western Elongation from the Sun of 45.9° occurred on JUN 03. Through a telescope during nights around JUN 04 Venus appeared near dichotomy, i.e. 50% illuminated like a Half Moon. Prior to that it appeared as a crescent and afterward gibbous. By the standard of 30 minutes before sunrise for Chicago, Venus achieved its highest altitude of 25.5° on AUG 04. It will fall to superior conjunction behind the Sun on 2018 JAN 08.

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

Venus Angular Diameter - 2017-18

Graph of equatorial angular diameter of Venus measured in arcseconds - Distance in AU = 16.82 / angular diameter

Venus Illumination Phase - 2017-18

Graph of the percentage of Venus’ apparent disk illuminated

Venus Stellar Magnitude - 2017-18

Graph of the brightness of Venus measured in stellar magnitude

© Curt Renz


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