Close approach of Mercury and Saturn

Dominic Ford, Editor
From the Appulses feed

Tags: Appulse

The planets Mercury and Saturn will make a close approach, passing within a mere 40.3 arcminutes of each other.

From Fairfield however, the pair will not be observable – they will reach their highest point in the sky during daytime and will be no higher than 2° above the horizon at dawn.

Mercury will be at mag -0.1; and Saturn will be at mag 0.7. Both objects will lie in the constellation Capricornus.

They will be a little too widely separated to fit comfortably 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 Mercury 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
Mercury 21h26m10s 16°43'S Capricornus -0.1 5"7
Saturn 21h25m30s 16°04'S Capricornus 0.7 15"3

The coordinates above are given in J2000.0. The pair will be at an angular separation of 23° from the Sun, which is in Aquarius at this time of year.

The sky on 2 Mar 2022

The sky on 2 March 2022
Sunrise
06:24
Sunset
17:44
Twilight ends
19:16
Twilight begins
04:52


Waxing Crescent

0%

29 days old

Planets
Rise Culm. Set
Mercury 05:35 10:37 15:40
Venus 04:01 09:03 14:05
Moon 06:45 12:10 17:44
Mars 04:26 09:08 13:51
Jupiter 06:35 12:13 17:51
Saturn 05:32 10:37 15:41
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.

Related news

10 Oct 2021  –  Saturn ends retrograde motion
04 Jun 2022  –  Saturn enters retrograde motion
14 Aug 2022  –  Saturn at opposition
22 Oct 2022  –  Saturn ends 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.

Share