Close approach of the Moon and Neptune

Dominic Ford, Editor
From the Appulses feed

Tags: Appulse

The Moon and Neptune will make a close approach, passing within a mere 19.2 arcminutes of each other. From some parts of the world, the Moon will pass in front of Neptune, creating a lunar occultation. The Moon will be 20 days old.

From Cambridge , the pair will be visible in the morning sky, becoming accessible around 22:43, when they reach an altitude of 21° above your eastern horizon. They will then reach their highest point in the sky at 03:59, 68° above your southern horizon. They will be lost to dawn twilight around 05:12, 63° above your south-western horizon.

The Moon will be at mag -12.2; and Neptune will be at mag 7.9. Both objects will lie in the constellation Gemini.

They will be close enough to fit within the field of view of a telescope, but will also be visible through a pair of binoculars.

A graph of the angular separation between the Moon and Neptune 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 07h30m30s 21°26'N Gemini -12.2 29'46"2
Neptune 07h30m20s 21°07'N Gemini 7.9 2"3

The coordinates above are given in J2000.0. The pair will be at an angular separation of 115° from the Sun, which is in Libra at this time of year.

The sky on 22 Nov 2024

The sky on 22 November 2024
Sunrise
06:41
Sunset
16:16
Twilight ends
17:55
Twilight begins
05:02


Waning Crescent

44%

21 days old

Planets
Rise Culm. Set
Mercury 08:36 12:57 17:19
Venus 10:09 14:31 18:53
Moon 22:03 05:23 12:29
Mars 20:40 04:06 11:33
Jupiter 17:14 00:45 08:16
Saturn 13:02 18:32 00:03
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.

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24 Oct 2074  –  Neptune enters retrograde motion
10 Jan 2075  –  Neptune at opposition
30 Mar 2075  –  Neptune ends retrograde motion
27 Oct 2075  –  Neptune enters 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.

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