The Moon in conjunction with Venus and Jupiter, with the Very Large Telescope in the foreground. Image © Y. Beletsky, ESO, 2009.

Close approach of the Moon and Saturn

Dominic Ford, Editor
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Ashburn
The sky at

The Moon and Saturn will make a close approach, passing within 2°03' of each other. The Moon will be 8 days old.

From Ashburn, the pair will be visible in the evening sky, becoming accessible at around 19:31 (EDT) as the dusk sky fades, 28° above your southern horizon. They will then reach its highest point in the sky at 19:32, 28° above your southern horizon. They will continue to be observable until around 23:23, when they sink to 8° above your south-western horizon.

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The Moon will be at mag -11.9, and Saturn at mag 0.2, both in the constellation Sagittarius.

The pair will be too widely separated to fit 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 two objects will also share the same right ascension – called a conjunction.

A graph of the angular separation between the Moon and Saturn around the time of closest approach is available here.

The positions of the two objects at the moment of closest approach will be as follows:

Object Right Ascension Declination Constellation Magnitude Angular Size
The Moon 18h10m50s -20°40' Sagittarius -11.9 29'44"0
Saturn 18h10m20s -22°44' Sagittarius 0.2 16"8

The coordinates above are given in J2000.0. The pair will be at an angular separation of 98° from the Sun, which is in Virgo at this time of year.

The sky on 17 September 2018
Sunrise
06:51
Sunset
19:14
Twilight ends
20:45
Twilight begins
05:21

8-day old moon
Waxing Gibbous

56%

8 days old

Planets
Rise Culm. Set
Mercury 06:36 12:55 19:14
Venus 10:25 15:27 20:28
Moon 14:56 19:48 00:39
Mars 17:03 21:41 02:20
Jupiter 11:25 16:32 21:38
Saturn 14:49 19:32 00:20
All times shown in EDT.

Source

The circumstances of this event were computed using the DE405 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

27 Jun 2018, 09:15 EDT  –  Saturn at opposition
09 Jul 2019, 12:55 EDT  –  Saturn at opposition
20 Jul 2020, 18:15 EDT  –  Saturn at opposition
02 Aug 2021, 02:02 EDT  –  Saturn 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.

Ashburn

Latitude:
Longitude:
Timezone:

39.04°N
77.49°W
EDT

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