Close approach of the Moon and Mars

Dominic Ford, Editor
From the Appulses feed

Tags: Appulse

The Moon and Mars will make a close approach, passing within a mere 13.7 arcminutes of each other. From some parts of the world, the Moon will pass in front of Mars, creating a lunar occultation. The Moon will be 25 days old.

From Columbus , the pair will be difficult to observe as they will appear no higher than 16° above the horizon. They will be visible in the dawn sky, rising at 04:22 (EDT) – 2 hours and 36 minutes before the Sun – and reaching an altitude of 16° above the south-eastern horizon before fading from view as dawn breaks at around 06:18.

The Moon will be at mag -11.1; and Mars will be at mag 1.2. Both objects will lie in the constellation Sagittarius.

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 Mars 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 19h16m20s 23°09'S Sagittarius -11.1 32'26"4
Mars 19h16m10s 22°55'S Sagittarius 1.2 5"1

The coordinates above are given in J2000.0. The pair will be at an angular separation of 54° from the Sun, which is in Aquarius at this time of year.

The sky on 3 Jul 2024

The sky on 3 July 2024
Sunrise
06:05
Sunset
21:04
Twilight ends
23:05
Twilight begins
04:03


Waning Crescent

3%

27 days old

Planets
Rise Culm. Set
Mercury 07:39 14:59 22:20
Venus 06:42 14:09 21:35
Moon 03:32 11:27 19:30
Mars 02:45 09:45 16:44
Jupiter 03:52 11:10 18:29
Saturn 00:25 06:07 11:49
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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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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