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 3°08' to the north of Mars. The Moon will be 27 days old.

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

From South El Monte , the pair will be difficult to observe as they will appear no higher than 15° above the horizon. They will be visible in the dawn sky, rising at 04:32 (PDT) – 2 hours and 19 minutes before the Sun – and reaching an altitude of 15° above the south-eastern horizon before fading from view as dawn breaks at around 06:09.

The Moon will be at mag -10.1, and Mars at mag 1.5, both in the constellation Ophiuchus.

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 17h33m40s 20°26'S Ophiuchus -10.1 30'58"0
Mars 17h33m40s 23°34'S Ophiuchus 1.5 4"2

The coordinates above are given in J2000.0. The pair will be at an angular separation of 36° from the Sun, which is in Capricornus at this time of year.

The sky on 21 Apr 2026

The sky on 21 April 2026
Sunrise
06:11
Sunset
19:27
Twilight ends
20:57
Twilight begins
04:42


Waxing Crescent

28%

4 days old

Planets
Rise Culm. Set
Mercury 05:25 11:32 17:38
Venus 07:29 14:29 21:29
Moon 09:30 17:09 00:46
Mars 05:17 11:27 17:37
Jupiter 10:58 18:07 01:15
Saturn 05:18 11:24 17:30
All times shown in PDT.

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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22 Nov 2069  –  Mars at perigee
30 Nov 2069  –  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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