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

Conjunction of the Moon and Mercury

Dominic Ford, Editor
From the Conjunctions feed

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The sky at

The Moon and Mercury will share the same right ascension, with the Moon passing 2°08' to the south of Mercury. The Moon will be 2 days old.

From Fairfield, the pair will become visible around 20:21 (EST) as the dusk sky fades, 15° above your western horizon. They will then sink towards the horizon, setting 1 hour and 57 minutes after the Sun at 21:57.

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

The Moon will be at mag -8.8, and Mercury at mag -0.0, both in the constellation Taurus.

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 the Moon 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
The Moon 04h50m50s +22°49' Taurus -8.8 29'27"7
Mercury 04h50m50s +24°57' Taurus -0.0 7"4

The coordinates above are given in J2000.0. The pair will be at an angular separation of 21° from the Sun, which is in Aries at this time of year.

The sky on 13 May 2021
Sunrise
05:36
Sunset
20:02
Twilight ends
21:55
Twilight begins
03:43

2-day old moon
Waxing Crescent

3%

2 days old

Planets
Rise Culm. Set
Mercury 06:38 14:18 21:57
Venus 06:18 13:41 21:04
Moon 06:48 14:18 21:48
Mars 08:43 16:20 23:56
Jupiter 02:17 07:36 12:55
Saturn 01:32 06:31 11:31
All times shown in EDT.

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

12 May 2021  –  Mercury at dichotomy
15 May 2021  –  Mercury reaches highest point in evening sky
17 May 2021  –  Mercury at greatest elongation east
09 Jun 2021  –  Mercury at aphelion

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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41.14°N
73.26°W
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