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 1.9 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 23 days old.

From Fairfield , the pair will be visible in the dawn sky, rising at 00:10 (EDT) and reaching an altitude of 51° above the eastern horizon before fading from view as dawn breaks at around 04:55.

The Moon will be at mag -11.5; and Neptune will be at mag 7.9. Both objects will lie in the constellation Taurus.

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 04h47m40s 20°49'N Taurus -11.5 29'33"9
Neptune 04h47m40s 20°51'N Taurus 7.9 2"2

The coordinates above are given in J2000.0. The pair will be at an angular separation of 76° from the Sun, which is in Leo at this time of year.

The sky on 4 Jul 2024

The sky on 4 July 2024
Sunrise
05:23
Sunset
20:28
Twilight ends
22:34
Twilight begins
03:16


Waning Crescent

0%

28 days old

Planets
Rise Culm. Set
Mercury 07:01 14:23 21:45
Venus 06:02 13:31 21:01
Moon 03:35 11:45 19:58
Mars 02:02 09:05 16:07
Jupiter 03:06 10:28 17:50
Saturn 23:43 05:24 11:05
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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