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 21.1 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 2 days old.

From Fairfield , the pair will be difficult to observe as they will appear no higher than 15° above the horizon. They will become visible at around 20:26 (EDT), 15° above your western horizon, as dusk fades to darkness. They will then sink towards the horizon, setting 2 hours and 24 minutes after the Sun at 22:02.

The Moon will be at mag -9.7; and Mars will be at mag 1.6. Both objects will lie in the constellation Taurus.

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 04h01m50s 20°56'N Taurus -9.7 33'10"3
Mars 04h01m20s 21°16'N Taurus 1.6 3"9

The coordinates above are given in J2000.0. The pair will be at an angular separation of 28° from the Sun, which is in Aries at this time of year.

The sky on 23 Jul 2024

The sky on 23 July 2024
Sunrise
05:37
Sunset
20:17
Twilight ends
22:14
Twilight begins
03:40


Waning Gibbous

93%

18 days old

Planets
Rise Culm. Set
Mercury 08:00 14:43 21:25
Venus 06:45 13:54 21:03
Moon 21:35 02:43 08:00
Mars 01:27 08:44 16:01
Jupiter 02:06 09:30 16:54
Saturn 22:27 04:08 09:48
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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