Solar Conjunction

by Dominic Ford, Editor
Solar Conjunction

The Moon appears as a thin crescent when it is close to solar conjunction, which is better known as new moon.

An object is said to be at solar conjunction when it makes its closest approach to the Sun in the night sky.

The planets are usually lost in the Sun's glare and virtually impossible to observe for a few weeks when they pass solar conjunction. One exception is Mercury, which moves around its orbit so quickly that it can pass from solar conjunction to maximum elongation in less than a month.

List of solar conjunctions

The table below lists the dates when objects are at solar conjunction in 2018, computed from NASA's DE405 planetary ephemeris. To show dates in other years, use the dropdown control.

List objects at solar conjunction in year

Date Object
Date Object
09 Jan 2018 06:22 UTCVenus at solar conjunctionMore information »
09 Jan 2018 09:26 UTC134340 Pluto at solar conjunctionMore information »
17 Feb 2018 12:12 UTCMercury at solar conjunctionMore information »
04 Mar 2018 13:56 UTCNeptune at solar conjunctionMore information »
01 Apr 2018 17:47 UTCMercury at solar conjunctionMore information »
13 Apr 2018 09:36 UTC136199 Eris at solar conjunctionMore information »
18 Apr 2018 14:03 UTCUranus at solar conjunctionMore information »
06 Jun 2018 01:50 UTCMercury at solar conjunctionMore information »
09 Aug 2018 02:00 UTCMercury at solar conjunctionMore information »
21 Sep 2018 01:38 UTCMercury at solar conjunctionMore information »
27 Sep 2018 13:29 UTC136472 Makemake at solar conjunctionMore information »
07 Oct 2018 15:10 UTC1 Ceres at solar conjunctionMore information »
18 Oct 2018 17:07 UTC136108 Haumea at solar conjunctionMore information »
26 Oct 2018 14:11 UTCVenus at solar conjunctionMore information »
26 Nov 2018 06:38 UTCJupiter at solar conjunctionMore information »
27 Nov 2018 09:09 UTCMercury at solar conjunctionMore information »

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