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 Saturn

Dominic Ford, Editor
From the Conjunctions feed

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The sky at

The Moon and Saturn will share the same right ascension, with the Moon passing 3°14' to the north of Saturn. The Moon will be 13 days old.

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

From Cambridge , the pair will be visible in the evening sky, becoming accessible around 20:58 (EST), 18° above your south-eastern horizon, as dusk fades to darkness. They will then reach their highest point in the sky at 23:11, 25° above your southern horizon. They will continue to be observable until around 02:38, when they sink below 9° above your south-western horizon.

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The Moon will be at mag -12.4, and Saturn at mag 0.0, both in the constellation Ophiuchus.

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 Saturn 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 17h28m30s 18°40'S Ophiuchus -12.4 29'26"9
Saturn 17h28m30s 21°55'S Ophiuchus 0.0 18"2

The coordinates above are given in J2000.0. The pair will be at an angular separation of 157° from the Sun, which is in Gemini at this time of year.

The sky on 6 Jul 2017

The sky on 6 July 2017
Sunrise
05:11
Sunset
20:24
Twilight ends
22:35
Twilight begins
03:00

12-day old moon
Waxing Gibbous

97%

12 days old

Planets
Rise Culm. Set
Mercury 06:30 13:59 21:27
Venus 02:33 09:45 16:57
Moon 18:18 23:11 04:02
Mars 05:41 13:15 20:49
Jupiter 12:50 18:37 00:24
Saturn 18:34 23:12 03:49
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

15 Jun 2017  –  Saturn at opposition
25 Aug 2017  –  Saturn ends retrograde motion
17 Apr 2018  –  Saturn enters retrograde motion
27 Jun 2018  –  Saturn at opposition

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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Cambridge

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42.38°N
71.11°W
EST

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