The Moon in conjunction with Venus and Jupiter, with the Very Large Telescope in the foreground. Image © Y. Beletsky, ESO, 2009.

Conjunction of the Moon and Mercury

Dominic Ford, Editor
From the Conjunctions feed

Please wait
Loading 0/4
Click and drag to rotate
Mouse wheel to zoom in/out
Touch with mouse to dismiss
The sky at

The Moon and Mercury will share the same right ascension, with the Moon passing 3°53' to the north of Mercury. The Moon will be 28 days old.

From Fairfield, the pair will be difficult to observe as they will appear no higher than 9° above the horizon. They will be visible in the dawn sky, rising at 04:22 (EDT) – 1 hour and 15 minutes before the Sun – and reaching an altitude of 9° above the eastern horizon before fading from view as dawn breaks around 05:17.

Begin typing the name of a town near to you, and then select the town from the list of options which appear below.

The Moon will be at mag -8.8, and Mercury at mag 0.7, both in the constellation Gemini.

The pair will be too widely separated to fit within the field of view of a telescope, but will be visible to the naked eye or through a pair of binoculars.

A graph of the angular separation between the Moon and Mercury around the time of closest approach is available here.

The positions of the two objects at the moment of conjunction will be as follows:

Object Right Ascension Declination Constellation Magnitude Angular Size
The Moon 06h31m00s +24°00' Gemini -8.8 31'06"1
Mercury 06h31m00s +20°06' Gemini 0.7 8"5

The coordinates above are given in J2000.0. The pair will be at an angular separation of 19° from the Sun, which is in Gemini at this time of year.

The sky on 18 July 2020
Twilight ends
Twilight begins

27-day old moon
Waning Crescent


27 days old

Rise Culm. Set
Mercury 04:19 11:37 18:55
Venus 02:48 09:57 17:06
Moon 03:21 11:05 18:58
Mars 23:50 05:57 12:04
Jupiter 19:59 00:40 05:21
Saturn 20:25 01:11 05:58
All times shown in EDT.


Never attempt to point a pair of binoculars or a telescope at an object close to the Sun. Doing so may result in immediate and permanent blindness.


The circumstances of this event were computed using the DE430 planetary ephemeris published by the Jet Propulsion Laboratory (JPL).

This event was automatically generated by searching the ephemeris for planetary alignments which are of interest to amateur astronomers, and the text above was generated based on an estimate of your location.

Related news

04 Jun 2020  –  Mercury at greatest elongation east
22 Jul 2020  –  Mercury at greatest elongation west
27 Jul 2020  –  Mercury at highest altitude in morning sky
01 Oct 2020  –  Mercury at highest altitude in evening sky

Image credit

The Moon in conjunction with Venus and Jupiter, with the Very Large Telescope in the foreground. Image © Y. Beletsky, ESO, 2009.






Color scheme