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 45' to the north of Mercury. The Moon will be 28 days old.

From Cambridge , the pair will be visible in the dawn sky, rising at 05:39 (EDT) – 1 hour and 38 minutes before the Sun – and reaching an altitude of 12° above the eastern horizon before fading from view as dawn breaks at around 06:52.

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

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 13h26m40s 6°07'S Virgo -8.7 31'06"5
Mercury 13h26m40s 6°53'S Virgo -0.4 7"3

The coordinates above are given in J2000.0. The pair will be at an angular separation of 18° from the Sun, which is in Libra at this time of year.

The sky on 2 Jul 2024

The sky on 2 July 2024
Sunrise
05:09
Sunset
20:24
Twilight ends
22:37
Twilight begins
02:55


Waning Crescent

10%

26 days old

Planets
Rise Culm. Set
Mercury 06:39 14:09 21:38
Venus 05:45 13:20 20:55
Moon 01:56 09:40 17:38
Mars 01:54 08:58 16:02
Jupiter 03:00 10:26 17:51
Saturn 23:43 05:23 11:04
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 Nov 2040  –  Mercury at highest altitude in morning sky
05 Nov 2040  –  Mercury at greatest elongation west
19 Jan 2041  –  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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