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 14.1 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 9° above the horizon at dawn.

Mercury will be at mag -0.6; and Saturn will be at mag 0.5. Both objects will lie in the constellation Libra.

They will be close enough to fit within the field of view of a telescope, but will also 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 15h03m20s 15°20'S Libra -0.6 5"7
Saturn 15h03m40s 15°07'S Libra 0.5 15"3

The coordinates above are given in J2000.0. The pair will be at an angular separation of 18° from the Sun, which is in Scorpius at this time of year.

The sky on 23 Jun 2026

The sky on 23 June 2026
Sunrise
05:38
Sunset
20:06
Twilight ends
21:51
Twilight begins
03:53


Waxing Gibbous

68%

8 days old

Planets
Rise Culm. Set
Mercury 07:27 14:29 21:31
Venus 08:44 15:42 22:39
Moon 14:52 20:20 01:41
Mars 03:23 10:19 17:16
Jupiter 07:42 14:45 21:48
Saturn 01:27 07:38 13:49
All times shown in PDT.

Warning

Never attempt to point a pair of binoculars or a telescope at an object close to the Sun. Doing so may result in immediate and permanent blindness.

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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