Close approach of Mercury and Saturn

Dominic Ford, Editor
From the Appulses feed

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The planets Mercury and Saturn will make a close approach, passing within a mere 30.8 arcminutes of each other.

From South El Monte however, the pair will not be observable – they will reach their highest point in the sky during daytime and will be no higher than 3° above the horizon at dawn.

Mercury will be at mag -0.2; and Saturn will be at mag 0.8. Both objects will lie in the constellation Cetus.

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 00h42m40s 1°39'N Cetus -0.2 6"2
Saturn 00h41m50s 2°07'N Cetus 0.8 16"0

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

The sky on 22 Jul 2026

The sky on 22 July 2026
Sunrise
05:53
Sunset
20:00
Twilight ends
21:39
Twilight begins
04:14


Waxing Gibbous

65%

8 days old

Planets
Rise Culm. Set
Mercury 05:02 11:57 18:51
Venus 09:29 15:51 22:13
Moon 14:43 19:46 00:44
Mars 02:42 09:51 17:00
Jupiter 06:19 13:17 20:16
Saturn 23:35 05:47 11:59
All times shown in PDT.

Source

The circumstances of this event were computed using the DE440 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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