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 12.3 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 15 days old.

From Cambridge , the pair will be visible between 20:57 and 02:55. They will become accessible at around 20:57, when they rise to an altitude of 21° above your south-eastern horizon. They will reach their highest point in the sky at 23:56, 35° above your southern horizon. They will become inaccessible at around 02:55 when they sink below 21° above your south-western horizon.

The Moon will be at mag -12.8; and Neptune will be at mag 7.9. Both objects will lie in the constellation Virgo.

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 14h18m20s 11°41'S Virgo -12.8 33'24"0
Neptune 14h18m10s 11°53'S Virgo 7.9 2"3

The coordinates above are given in J2000.0. The pair will be at an angular separation of 176° from the Sun, which is in Aries at this time of year.

The sky on 17 Jul 2024

The sky on 17 July 2024
Sunrise
05:20
Sunset
20:17
Twilight ends
22:22
Twilight begins
03:14


Waxing Gibbous

90%

12 days old

Planets
Rise Culm. Set
Mercury 07:39 14:36 21:32
Venus 06:19 13:39 20:59
Moon 17:18 21:41 01:58
Mars 01:26 08:42 15:58
Jupiter 02:12 09:40 17:08
Saturn 22:43 04:23 10:03
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.

Related news

07 Feb 1959  –  Neptune enters retrograde motion
26 Apr 1959  –  Neptune at opposition
16 Jul 1959  –  Neptune ends retrograde motion
09 Feb 1960  –  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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