Conjunction of the Moon and Saturn

Dominic Ford, Editor
From the Conjunctions feed


The Moon and Saturn will share the same right ascension, with the Moon passing 4°11' to the south of Saturn. The Moon will be 2 days old.

From Cambridge , the pair will be difficult to observe as they will appear no higher than 14° above the horizon. They will become visible at around 17:03 (EDT), 14° above your south-western horizon, as dusk fades to darkness. They will then sink towards the horizon, setting 2 hours and 16 minutes after the Sun at 18:40.

The Moon will be at mag -9.7, and Saturn at mag 0.6, 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 20h58m40s 22°10'S Capricornus -9.7 32'43"5
Saturn 20h58m40s 17°59'S Capricornus 0.6 15"4

The coordinates above are given in J2000.0. The pair will be at an angular separation of 27° from the Sun, which is in Sagittarius at this time of year.

The sky on 4 Jan 2022

The sky on 4 January 2022
Sunrise
07:11
Sunset
16:24
Twilight ends
18:05
Twilight begins
05:30


Waxing Crescent

8%

2 days old

Planets
Rise Culm. Set
Mercury 08:26 13:08 17:51
Venus 07:21 12:15 17:10
Moon 09:08 13:50 18:39
Mars 05:10 09:44 14:17
Jupiter 09:42 15:00 20:18
Saturn 08:51 13:45 18:40
All times shown in EST.

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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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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