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

Conjunction of Mars and Mercury

Dominic Ford, Editor
From the Conjunctions feed

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The sky at

Mars and Mercury will share the same right ascension, with Mars passing 3°50' to the north of Mercury.

From Seattle however, the pair will not be observable – they will reach their highest point in the sky during daytime and will be 1° below the horizon at dusk.

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

Mars will be at mag 1.8, and Mercury at mag 1.9, both in the constellation Cancer.

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 Mars and Mercury 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
Mars 08h23m30s +20°33' Cancer 1.8 3"6
Mercury 08h23m30s +16°43' Cancer 1.9 10"5

The coordinates above are given in J2000.0. The pair will be at an angular separation of 18° from the Sun, which is in Gemini at this time of year.

The sky on 07 July 2019
Sunrise
05:18
Sunset
21:07
Twilight ends
00:03
Twilight begins
02:24

5-day old moon
Waxing Crescent

28%

5 days old

Planets
Rise Culm. Set
Mercury 07:10 14:30 21:50
Venus 04:30 12:28 20:26
Moon 11:31 18:02 00:03
Mars 06:50 14:31 22:12
Jupiter 18:47 23:05 03:27
Saturn 21:00 01:23 05:42
All times shown in PDT.

Warning

Never attempt to point a pair of binoculars or a telescope at an object close to the Sun. Doing so may result in immediate and permanent blindness.

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.

Seattle

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47.61°N
122.33°W
PDT

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