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 23' to the south of Mercury. The Moon will be 27 days old.

At around the same time, the two objects will also make a close approach, technically called an appulse.

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 dawn.

The Moon will be at mag -9.2, and Mercury at mag 0.6, both in the constellation Capricornus.

The pair will be close enough to fit within the field of view of a telescope, but will also 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 21h33m30s 13°41'S Capricornus -9.2 29'40"5
Mercury 21h33m30s 13°17'S Capricornus 0.6 8"8

The coordinates above are given in J2000.0. The pair will be at an angular separation of 24° from the Sun, which is in Aquarius at this time of year.

The sky on 23 Nov 2024

The sky on 23 November 2024
Sunrise
06:48
Sunset
16:27
Twilight ends
18:04
Twilight begins
05:11


Waning Crescent

38%

22 days old

Planets
Rise Culm. Set
Mercury 08:37 13:04 17:30
Venus 10:14 14:41 19:08
Moon 23:20 06:15 12:58
Mars 20:49 04:12 11:35
Jupiter 17:22 00:49 08:16
Saturn 13:05 18:37 00:09
All times shown in EST.

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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26 May 2073  –  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.

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