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Conjunction of the Moon and Mars

Dominic Ford, Editor
From the Conjunctions feed

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The sky at

The Moon and Mars will share the same right ascension, with the Moon passing 1°17' to the south of Mars. The Moon will be 4 days old.

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

From Seattle, the pair will be difficult to observe as they will appear no higher than 14° above the horizon. They will become visible around 21:09 (PST) as the dusk sky fades, 14° above your western horizon. They will then sink towards the horizon, setting 1 hour and 51 minutes after the Sun at 22:37.

Begin typing the name of a town near to you, and then select the town from the list of options which appear below.

The Moon will be at mag -10.7, and Mars at mag 1.6, both in the constellation Virgo.

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 11h39m00s +01°41' Virgo -10.7 30'16"1
Mars 11h39m00s +02°59' Virgo 1.6 4"4

The coordinates above are given in J2000.0. The pair will be at an angular separation of 48° from the Sun, which is in Cancer at this time of year.

The sky on 28 July 2025
Sunrise
05:40
Sunset
20:48
Twilight ends
23:11
Twilight begins
03:17

4-day old moon
Waxing Crescent

17%

4 days old

Planets
Rise Culm. Set
Mercury 06:29 13:30 20:31
Venus 02:41 10:29 18:16
Moon 10:17 16:27 22:37
Mars 10:04 16:21 22:37
Jupiter 03:34 11:29 19:23
Saturn 22:52 04:52 10:48
All times shown in PDT.

Source

The circumstances of this event were computed using the DE405 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.

Related news

15 Jan 2025  –  Mars at opposition
19 Feb 2027  –  Mars at opposition
25 Mar 2029  –  Mars at opposition
04 May 2031  –  Mars at opposition

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Seattle

Latitude:
Longitude:
Timezone:

47.61°N
122.33°W
PST

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