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 23.1 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 11 days old.

From Fairfield , the pair will be visible in the evening sky, becoming accessible around 21:29 (EST), 26° above your southern horizon, as dusk fades to darkness. They will then reach their highest point in the sky at 21:53, 26° above your southern horizon. They will continue to be observable until around 23:41, when they sink below 21° above your south-western horizon.

The Moon will be at mag -12.3; and Neptune will be at mag 7.9. Both objects will lie in the constellation Ophiuchus.

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 17h37m50s 21°39'S Ophiuchus -12.3 29'27"3
Neptune 17h37m40s 22°02'S Ophiuchus 7.9 2"3

The coordinates above are given in J2000.0. The pair will be at an angular separation of 136° from the Sun, which is in Cancer at this time of year.

The sky on 23 Nov 2024

The sky on 23 November 2024
Sunrise
06:48
Sunset
16:27
Twilight ends
18:04
Twilight begins
05:11


Waning Crescent

42%

22 days old

Planets
Rise Culm. Set
Mercury 08:37 13:04 17:30
Venus 10:14 14:41 19:08
Moon 23:20 06:15 12:58
Mars 20:49 04:12 11:35
Jupiter 17:22 00:49 08:16
Saturn 13:05 18:37 00:09
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.

Related news

17 Jun 1982  –  Neptune at opposition
05 Sep 1982  –  Neptune ends retrograde motion
31 Mar 1983  –  Neptune enters retrograde motion
19 Jun 1983  –  Neptune at opposition

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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