Conjunction of the Moon and Mars

Dominic Ford, Editor
From the Conjunctions feed


The Moon and Mars will share the same right ascension, with the Moon passing 4°53' to the north of Mars. The Moon will be 22 days old.

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

From Cambridge , the pair will be visible in the dawn sky, rising at 23:39 (EST) and reaching an altitude of 65° above the south-eastern horizon before fading from view as dawn breaks at around 05:59.

The Moon will be at mag -11.7, and Mars at mag 0.5, both in the constellation Gemini.

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 Mars 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 06h50m20s 28°13'N Gemini -11.7 30'50"4
Mars 06h50m20s 23°20'N Gemini 0.5 7"3

The coordinates above are given in J2000.0. The pair will be at an angular separation of 81° from the Sun, which is in Virgo at this time of year.

The sky on 25 Sep 2024

The sky on 25 September 2024
Sunrise
06:32
Sunset
18:35
Twilight ends
20:09
Twilight begins
04:58


Waning Crescent

37%

22 days old

Planets
Rise Culm. Set
Mercury 06:10 12:21 18:32
Venus 09:09 14:26 19:43
Moon 23:02 07:13 15:21
Mars 23:39 07:16 14:52
Jupiter 22:13 05:45 13:17
Saturn 17:55 23:28 05:01
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.

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12 Jan 2025  –  Mars at perigee
15 Jan 2025  –  Mars at opposition

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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