Close approach of the Moon and Mercury

Dominic Ford, Editor
From the Appulses feed

Tags: Appulse

The Moon and Mercury will make a close approach, passing within a mere 9.3 arcminutes of each other. From some parts of the world, the Moon will pass in front of Mercury, creating a lunar occultation. The Moon will be 27 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 3° above the horizon at dawn.

The Moon will be at mag -9.5; and Mercury will be at mag 0.1. Both objects will lie in the constellation Aquarius.

They 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.

At around the same time, the pair will also share the same right ascension – called a conjunction.

A graph of the angular separation between the Moon and Mercury around the time of closest approach is available here.

The positions of the pair at the moment of closest approach will be as follows:

Object Right Ascension Declination Constellation Magnitude Angular Size
The Moon 23h16m40s 7°07'S Aquarius -9.5 30'20"8
Mercury 23h16m20s 6°58'S Aquarius 0.1 6"9

The coordinates above are given in J2000.0. The pair will be at an angular separation of 27° from the Sun, which is in Pisces at this time of year.

The sky on 27 Nov 2024

The sky on 27 November 2024
Sunrise
06:52
Sunset
16:25
Twilight ends
18:03
Twilight begins
05:14


Waning Crescent

11%

26 days old

Planets
Rise Culm. Set
Mercury 08:19 12:49 17:19
Venus 10:16 14:45 19:15
Moon 03:23 08:52 14:13
Mars 20:35 03:58 11:22
Jupiter 17:04 00:31 07:58
Saturn 12:50 18:22 23:54
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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11 Jun 2092  –  Mercury at greatest elongation east
28 Jul 2092  –  Mercury at greatest elongation west

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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