The Moon and Saturn will make a close approach, passing within 2°07' of each other. The Moon will be 9 days old.
From Cambridge , the pair will be visible in the evening sky, becoming accessible around 17:23 (EDT), 58° above your south-eastern horizon, as dusk fades to darkness. They will then reach their highest point in the sky at 18:59, 66° above your southern horizon. They will continue to be observable until around 01:15, when they sink below 9° above your western horizon.
The Moon will be at mag -12.1; and Saturn will be at mag -0.2. Both objects will lie in the constellation Taurus.
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 | 03h58m20s | 20°45'N | Taurus | -12.1 | 29'35"8 |
| Saturn | 03h59m20s | 18°38'N | Taurus | -0.2 | 19"1 |
The coordinates above are given in J2000.0. The pair will be at an angular separation of 110° from the Sun, which is in Capricornus at this time of year.
The sky on 31 Jan 2031
| The sky on 31 January 2031 | ||||||||||||||||||||||||||||||||||
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71% 8 days old |
All times shown in EST.
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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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| 27 Nov 2030 | – Saturn at opposition |
| 01 Feb 2031 | – Saturn ends retrograde motion |
| 05 Oct 2031 | – Saturn enters retrograde motion |
| 11 Dec 2031 | – 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.