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Mercury as an Early Spring Morning Star

Panorama of the eastern sky with Mercury and the Moon as seen from Chicagoland 30 minutes before sunrise from 2020 FEB 29 to APR 15 - See table below.

Mercury - Elongations & Altitudes

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

Mercury 02 Mercury 03 Mercury 04

Mercury Angular Diameter

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

Mercury Illumination Phase

Graph of the percentage of Mercury’s apparent disk illuminated

Mercury Stellar Magnitude

Graph of the brightness of Mercury measured in stellar magnitude

Mercury 05


© Curt Renz

Mercury 01 MerTran

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Mercury Transits Sun

Graphics of Mercury transiting the Sun in 2019, 2032, 2039, 2049 & 2052

What's in the Night Sky?
Orion Helpful Astronomical Guides