The Moon and Saturn will share the same right ascension, with the Moon passing 4°01' to the south of Saturn. The Moon will be 17 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 morning sky, becoming accessible around 23:36, when they reach an altitude of 10° above your south-eastern horizon. They will then reach their highest point in the sky at 03:21, 29° above your southern horizon. They will be lost to dawn twilight around 04:27, 27° above your southern horizon.
The Moon will be at mag -12.6, and Saturn at mag 0.3, 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 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 | 20h59m40s | 21°49'S | Capricornus | -12.6 | 32'03"8 |
| Saturn | 20h59m40s | 17°47'S | Capricornus | 0.3 | 18"2 |
The coordinates above are given in J2000.0. The pair will be at an angular separation of 144° from the Sun, which is in Gemini at this time of year.
The sky on 27 Jun 2021
| The sky on 27 June 2021 | ||||||||||||||||||||||||||||||||||
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87% 17 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.
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| 23 May 2021 | – Saturn enters retrograde motion |
| 02 Aug 2021 | – Saturn at opposition |
| 10 Oct 2021 | – Saturn ends retrograde motion |
| 04 Jun 2022 | – Saturn enters 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.