Conjunction of Mercury and Neptune

Dominic Ford, Editor
From the Conjunctions feed


Mercury and Neptune will share the same right ascension, with Mercury passing 1°57' to the south of Neptune.

From Fairfield however, the pair will not be readily observable since they will be very close to the Sun, at a separation of only 12° from it.

Mercury will be at mag -0.5, and Neptune at mag 8.0, 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 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 21h03m00s 18°49'S Capricornus -0.5 4"9
Neptune 21h03m00s 16°51'S Capricornus 8.0 2"2

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

The sky on 2 Oct 2024

The sky on 2 October 2024
Sunrise
06:48
Sunset
18:32
Twilight ends
20:04
Twilight begins
05:16


Waxing Crescent

0%

29 days old

Planets
Rise Culm. Set
Mercury 06:56 12:47 18:39
Venus 09:33 14:40 19:47
Moon 06:34 12:36 18:28
Mars 23:42 07:13 14:44
Jupiter 21:59 05:27 12:55
Saturn 17:34 23:07 04:41
All times shown in EDT.

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

22 Oct 2003  –  Neptune ends retrograde motion
17 May 2004  –  Neptune enters retrograde motion
05 Aug 2004  –  Neptune at opposition
24 Oct 2004  –  Neptune ends retrograde motion

Image credit

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

Share