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

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The sky at

The Moon and Mercury will share the same right ascension, with the Moon passing 3°39' to the south of Mercury. The Moon will be 1 days old.

From Ashburn, the pair will be difficult to observe as they will appear no higher than 9° above the horizon. They will become visible around 20:50 (EDT) as the dusk sky fades, 9° above your north-western horizon. They will then sink towards the horizon, setting 1 hour and 22 minutes after the Sun at 21:51.

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 -8.4 in the constellation Orion, and Mercury at mag -0.8 in the neighbouring constellation of Taurus.

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 05h57m20s +21°48' Orion -8.4 31'59"9
Mercury 05h57m20s +25°28' Taurus -0.8 5"7

The coordinates above are given in J2000.0. The pair will be at an angular separation of 15° from the Sun, which is in Taurus at this time of year.

The sky on 04 June 2019
Twilight ends
Twilight begins

1-day old moon
Waxing Crescent


1 day old

Rise Culm. Set
Mercury 06:43 14:17 21:52
Venus 04:45 11:49 18:52
Moon 07:03 14:23 21:42
Mars 07:45 15:13 22:41
Jupiter 20:48 01:38 06:23
Saturn 22:52 03:44 08:32
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

24 May 2019  –  Mercury at perihelion
17 Jun 2019  –  Mercury at dichotomy
19 Jun 2019  –  Mercury reaches highest point in evening sky
23 Jun 2019  –  Mercury at greatest elongation east

Image credit

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






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