Close approach of the Moon and Jupiter

Dominic Ford, Editor
From the Appulses feed

Tags: Appulse

The Moon and Jupiter will make a close approach, passing within a mere 43.1 arcminutes of each other. From some parts of the world, the Moon will pass in front of Jupiter, creating a lunar occultation. The Moon will be 27 days old.

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 7° above the horizon at dawn.

The Moon will be at mag -9.4 in Aries; and Jupiter will be at mag -2.1 in Pisces.

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 the Moon and Jupiter 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 01h51m20s 11°03'N Aries -9.4 31'28"8
Jupiter 01h52m30s 10°25'N Pisces -2.1 32"9

The coordinates above are given in J2000.0. The pair will be at an angular separation of 26° from the Sun, which is in Taurus at this time of year.

The sky on 17 May 2023

The sky on 17 May 2023
Sunrise
05:30
Sunset
20:05
Twilight ends
22:01
Twilight begins
03:35


Waning Crescent

3%

27 days old

Planets
Rise Culm. Set
Mercury 04:50 11:30 18:11
Venus 08:15 15:58 23:42
Moon 04:20 11:08 18:10
Mars 09:46 17:13 00:40
Jupiter 04:25 11:05 17:45
Saturn 02:21 07:47 13:12
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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