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

Conjunction of Venus and Mercury

Dominic Ford, Editor
From the Conjunctions feed

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The sky at

Venus and Mercury will share the same right ascension, with Venus passing 4°13' to the north of Mercury.

From San Diego , the pair will become visible at around 17:10 (PST), 11° above your south-western horizon, as dusk fades to darkness. They will then sink towards the horizon, setting 1 hour and 22 minutes after the Sun at 18:12.

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

Venus will be at mag -4.4, and Mercury at mag -0.7, both in the constellation Sagittarius.

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 Venus 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
Venus 19h43m10s 19°10'S Sagittarius -4.4 59"3
Mercury 19h43m10s 23°23'S Sagittarius -0.7 5"5

The coordinates above are given in J2000.0. The pair will be at an angular separation of 17° from the Sun, which is in Sagittarius at this time of year.

The sky on 28 Dec 2021

The sky on 28 December 2021
Sunrise
06:47
Sunset
16:50
Twilight ends
18:18
Twilight begins
05:19

24-day old moon
Waning Crescent

24%

24 days old

Planets
Rise Culm. Set
Mercury 08:01 13:00 17:58
Venus 07:50 13:02 18:13
Moon 01:02 07:00 12:49
Mars 04:52 09:54 14:57
Jupiter 09:56 15:26 20:56
Saturn 08:59 14:14 19:28
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

03 Dec 2021  –  Venus at highest altitude in evening sky
19 Feb 2022  –  Venus at highest altitude in morning sky
20 Mar 2022  –  Venus at greatest elongation west
12 May 2023  –  Venus at highest altitude in evening sky

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
PST

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