The Moon in conjunction with Venus and Jupiter, with the Very Large Telescope in the foreground. Image © Y. Beletsky, ESO, 2009.

Conjunction of Mercury and Mars

Dominic Ford, Editor
From the Conjunctions feed

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The sky at

Mercury and Mars will share the same right ascension, with Mercury passing 0°14' to the north of Mars.

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

From Washington, the pair will be difficult to observe as they will appear no higher than 12° above the horizon. They will become visible at around 21:26 (MDT) as the dusk sky fades, 12° above your western horizon. They will then sink towards the horizon, setting 1 hour and 44 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.

Mercury will be at mag 0.1, and Mars at mag 1.8, both in the constellation Gemini.

The pair 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.

A graph of the angular separation between Mercury 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
Mercury 07h32m30s +23°09' Gemini 0.1 7"3
Mars 07h32m30s +22°55' Gemini 1.8 3"7

The coordinates above are given in J2000.0. The pair will be at an angular separation of 24° from the Sun, which is in Taurus at this time of year.

The sky on 18 June 2019
Sunrise
06:12
Sunset
20:55
Twilight ends
22:48
Twilight begins
04:19

15-day old moon
Waning Gibbous

98%

15 days old

Planets
Rise Culm. Set
Mercury 08:02 15:20 22:39
Venus 05:15 12:27 19:40
Moon 22:24 02:24 07:15
Mars 08:02 15:20 22:37
Jupiter 20:02 00:58 05:48
Saturn 22:11 03:08 08:01
All times shown in MDT.

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

26 Jul 2018  –  Mars at opposition
13 Oct 2020  –  Mars at opposition
07 Dec 2022  –  Mars at opposition
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.

Washington

Latitude:
Longitude:
Timezone:

37.13°N
113.51°W
MDT

Color scheme