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Conjunction of the Moon and Jupiter

Dominic Ford, Editor
From the Conjunctions feed

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The sky at

The Moon and Jupiter will share the same right ascension, with the Moon passing 3°08' to the north of Jupiter. The Moon will be 5 days old.

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

From Fairfield, the pair will become visible around 20:33 (EDT) as the dusk sky fades, 27° above your south-western horizon. They will then sink towards the horizon, setting 3 hours and 0 minutes after the Sun at 23:13.

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 -11.4, and Jupiter at mag -1.9, both in the constellation Virgo.

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 Jupiter 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 13h02m00s -02°10' Virgo -11.4 30'31"9
Jupiter 13h02m00s -05°19' Virgo -1.9 33"8

The coordinates above are given in J2000.0. The pair will be at an angular separation of 69° from the Sun, which is in Cancer at this time of year.

The sky on 28 July 2017
Twilight ends
Twilight begins

5-day old moon
Waxing Crescent


5 days old

Rise Culm. Set
Mercury 08:08 14:45 21:22
Venus 02:47 10:12 17:37
Moon 11:36 17:31 23:26
Mars 05:40 12:58 20:16
Jupiter 11:45 17:29 23:13
Saturn 17:08 21:50 02:35
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

07 Apr 2017  –  Jupiter at opposition
26 Oct 2017  –  Jupiter at solar conjunction
08 May 2018  –  Jupiter at opposition
26 Nov 2018  –  Jupiter at solar conjunction

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