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Conjunction of Mercury and Neptune

Dominic Ford, Editor
From the Conjunctions feed

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The sky at

Mercury and Neptune will share the same right ascension, with Mercury passing 1°14' to the south of Neptune.

From Fairfield however, the pair will not be observable – they will reach their highest point in the sky during daytime and will be no higher than 4° above the horizon at dawn.

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

Mercury will be at mag -0.0, and Neptune at mag 8.0, both in the constellation Aquarius.

The pair will be too widely separated to fit within the field of view of a telescope, but will be visible through a pair of binoculars.

A graph of the angular separation between Mercury and Neptune 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
Mercury 22h31m30s -11°14' Aquarius -0.0 6"4
Neptune 22h31m30s -10°00' Aquarius 8.0 2"2

The coordinates above are given in J2000.0. The pair will be at an angular separation of 26° from the Sun, which is in Pisces at this time of year.

The sky on 22 March 2014
Twilight ends
Twilight begins

21-day old moon
Waning Gibbous


21 days old

Rise Culm. Set
Mercury 06:02 11:26 16:49
Venus 04:51 10:02 15:13
Moon 00:34 05:29 10:25
Mars 20:47 02:30 08:09
Jupiter 12:07 19:39 03:14
Saturn 23:10 04:19 09:23
All times shown in EDT.


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

23 Feb 2014  –  Neptune at solar conjunction
29 Aug 2014  –  Neptune at opposition
25 Feb 2015  –  Neptune at solar conjunction
31 Aug 2015  –  Neptune at opposition

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