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 2°43' to the north of Mercury. The Moon will be 2 days old.

From Cambridge , the pair will be difficult to observe as they will appear no higher than 12° above the horizon. They will become visible at around 20:38 (EDT), 12° above your north-western horizon, as dusk fades to darkness. They will then sink towards the horizon, setting 1 hour and 57 minutes after the Sun at 22:00.

The Moon will be at mag -9.1, and Mercury at mag 0.2, both in the constellation 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 05h12m00s 28°02'N Taurus -9.1 30'53"4
Mercury 05h12m00s 25°19'N Taurus 0.2 7"8

The coordinates above are given in J2000.0. The pair will be at an angular separation of 22° from the Sun, which is in Taurus at this time of year.

The sky on 10 Oct 2024

The sky on 10 October 2024
Sunrise
06:49
Sunset
18:09
Twilight ends
19:43
Twilight begins
05:15


Waxing Gibbous

58%

8 days old

Planets
Rise Culm. Set
Mercury 07:27 12:56 18:25
Venus 09:47 14:38 19:29
Moon 14:36 18:53 23:13
Mars 23:16 06:50 14:24
Jupiter 21:15 04:47 12:19
Saturn 16:54 22:25 03:57
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

17 May 1988  –  Mercury at highest altitude in evening sky
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06 Jul 1988  –  Mercury at greatest elongation west
11 Jul 1988  –  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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