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

Conjunction of Jupiter and Mercury

Dominic Ford, Editor
From the Conjunctions feed

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The sky at

Jupiter and Mercury will share the same right ascension, with Jupiter passing 1°28' 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 no higher than 5° above 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.

Jupiter will be at mag -1.9, and Mercury at mag -0.9, both in the constellation Capricornus.

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 Jupiter 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
Jupiter 20h29m30s -19°31' Capricornus -1.9 31"9
Mercury 20h29m30s -20°59' Capricornus -0.9 5"3

The coordinates above are given in J2000.0. The pair will be at an angular separation of 13° from the Sun, which is in Sagittarius at this time of year.

The sky on 11 January 2021
Sunrise
07:56
Sunset
16:40
Twilight ends
18:32
Twilight begins
06:04

28-day old moon
Waning Crescent

2%

28 days old

Planets
Rise Culm. Set
Mercury 08:53 13:18 17:44
Venus 06:50 11:02 15:14
Moon 06:48 10:56 15:07
Mars 11:39 18:42 01:45
Jupiter 08:41 13:14 17:47
Saturn 08:36 13:06 17:36
All times shown in PST.

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 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.

Related news

14 Jul 2020  –  Jupiter at opposition
19 Aug 2021  –  Jupiter at opposition
26 Sep 2022  –  Jupiter at opposition
02 Nov 2023  –  Jupiter 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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