The Moon and Saturn will make a close approach, passing within 3°13' of each other. The Moon will be 13 days old.
From Cambridge , the pair will be visible in the evening sky, becoming accessible around 20:58 (EDT), 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.
The Moon will be at mag -12.5; and Saturn will be at mag 0.0. Both objects will lie in the constellation Ophiuchus.
They 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.
At around the same time, the pair will also share the same right ascension – called a conjunction.
A graph of the angular separation between the Moon and Saturn around the time of closest approach is available here.
The positions of the pair at the moment of closest approach will be as follows:
| Object | Right Ascension | Declination | Constellation | Magnitude | Angular Size |
| The Moon | 17h29m50s | 18°42'S | Ophiuchus | -12.5 | 29'27"0 |
| 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 | ||||||||||||||||||||||||||||||||||
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97% 12 days old |
All times shown in EDT.
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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.