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 54' to the south of Mercury. The Moon will be 2 days old.

From Fairfield however, the pair will not be observable – they will reach their highest point in the sky during daytime and will be no higher than 4° above the horizon at dusk.

The Moon will be at mag -9.1, and Mercury at mag -0.3, both in the constellation Scorpius.

The pair will be a little too widely separated to fit comfortably 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 16h44m40s 25°47'S Scorpius -9.1 32'57"0
Mercury 16h44m40s 24°52'S Scorpius -0.3 5"8

The coordinates above are given in J2000.0. The pair will be at an angular separation of 21° from the Sun, which is in Libra at this time of year.

The sky on 16 Jul 2024

The sky on 16 July 2024
Sunrise
05:31
Sunset
20:23
Twilight ends
22:23
Twilight begins
03:30


Waxing Gibbous

83%

11 days old

Planets
Rise Culm. Set
Mercury 07:47 14:44 21:40
Venus 06:28 13:46 21:04
Moon 16:14 20:56 01:32
Mars 01:40 08:52 16:04
Jupiter 02:28 09:52 17:15
Saturn 22:55 04:36 10:17
All times shown in EDT.

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.

Related news

10 Sep 2004  –  Mercury at highest altitude in morning sky
20 Nov 2004  –  Mercury at greatest elongation east
25 Nov 2004  –  Mercury at highest altitude in evening sky
26 Dec 2004  –  Mercury at highest altitude in morning sky

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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