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 0°19' to the south of Mercury.

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

From San Diego, the pair will be visible in the dawn sky, rising at 05:00 (PDT) – 1 hour and 12 minutes before the Sun – and reaching an altitude of 10° above the south-eastern horizon before fading from view as dawn breaks around 05:56.

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Jupiter will be at mag -2.0, and Mercury at mag 0.1, both in the constellation Capricornus.

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 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 21h19m40s -16°12' Capricornus -2.0 32"4
Mercury 21h19m40s -15°53' Capricornus 0.1 7"2

The coordinates above are given in J2000.0. The pair will be at an angular separation of 27° from the Sun, which is in Aquarius at this time of year.

The sky on 04 March 2021
Sunrise
06:12
Sunset
17:48
Twilight ends
19:12
Twilight begins
04:48

21-day old moon
Waning Gibbous

53%

21 days old

Planets
Rise Culm. Set
Mercury 04:56 10:17 15:37
Venus 06:06 11:44 17:22
Moon 22:56 04:28 09:50
Mars 09:48 16:50 23:51
Jupiter 05:00 10:19 15:39
Saturn 04:33 09:46 14:59
All times shown in PST.

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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San Diego

Latitude:
Longitude:
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32.72°N
117.16°W
PDT

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