Close approach of the Moon and Saturn

Dominic Ford, Editor
From the Appulses feed

Tags: Appulse

The Moon and Saturn will make a close approach, passing within 2°15' of each other. The Moon will be 17 days old.

From Newark , the pair will be visible in the morning sky, becoming accessible around 22:22, when they reach an altitude of 10° above your south-eastern horizon. They will then reach their highest point in the sky at 02:41, 38° above your southern horizon. They will be lost to dawn twilight around 05:15, 26° above your south-western horizon.

The Moon will be at mag -12.7; and Saturn will be at mag 0.5. Both objects will lie in the constellation Aquarius.

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 22h34m30s 13°15'S Aquarius -12.7 33'17"1
Saturn 22h30m40s 11°12'S Aquarius 0.5 18"7

The coordinates above are given in J2000.0. The pair will be at an angular separation of 154° from the Sun, which is in Cancer at this time of year.

The sky on 3 Aug 2023

The sky on 3 August 2023
Sunrise
05:52
Sunset
20:10
Twilight ends
21:59
Twilight begins
04:01


Waning Gibbous

92%

17 days old

Planets
Rise Culm. Set
Mercury 08:11 14:43 21:15
Venus 07:23 13:51 20:20
Moon 21:23 02:31 07:50
Mars 08:45 15:12 21:39
Jupiter 00:00 06:55 13:51
Saturn 21:17 02:41 08:04
All times shown in EDT.

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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