Conjunction of the Moon and Mercury

Dominic Ford, Editor
From the Conjunctions feed


The Moon and Mercury will share the same right ascension, with the Moon passing 5°01' to the north of Mercury. The Moon will be 28 days old.

From Columbus however, the pair will not be observable – they will reach their highest point in the sky during daytime and will be no higher than 8° above the horizon at dawn.

The Moon will be at mag -8.7, and Mercury at mag 0.4, both in the constellation Leo.

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

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 09h35m40s 18°17'N Leo -8.7 29'50"5
Mercury 09h35m40s 13°16'N Leo 0.4 8"1

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

The sky on 1 Sep 2024

The sky on 1 September 2024
Sunrise
06:57
Sunset
20:02
Twilight ends
21:37
Twilight begins
05:21


Waning Crescent

1%

28 days old

Planets
Rise Culm. Set
Mercury 05:34 12:23 19:11
Venus 08:59 15:00 21:02
Moon 05:18 12:36 19:43
Mars 01:09 08:37 16:05
Jupiter 00:35 07:58 15:22
Saturn 20:23 02:00 07:38
All times shown in EDT.

Warning

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.

Source

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.

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06 Sep 2024  –  Mercury at highest altitude in morning sky
16 Nov 2024  –  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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