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Conjunction of the Moon and Saturn

Dominic Ford, Editor
From the Conjunctions feed

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The sky at

The Moon and Saturn will share the same right ascension, with the Moon passing 1°41' to the north of Saturn. The Moon will be 18 days old.

At around the same time, the two objects will also make a close approach, technically called an appulse.

From Washington, the pair will be visible in the morning sky, becoming accessible around 01:21, when they rise to an altitude of 7° above your south-eastern horizon. They will then reach its highest point in the sky at 05:22, 30° above your southern horizon. They will be lost to dawn twilight around 06:17, 29° above your southern horizon.

Begin typing the name of a town near to you, and then select the town from the list of options which appear below.

The Moon will be at mag -12.3, and Saturn at mag 0.1, 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.

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 conjunction will be as follows:

Object Right Ascension Declination Constellation Magnitude Angular Size
The Moon 18h37m20s -20°34' Sagittarius -12.3 29'35"2
Saturn 18h37m20s -22°16' Sagittarius 0.1 17"5

The coordinates above are given in J2000.0. The pair will be at an angular separation of 125° from the Sun, which is in Aries at this time of year.

The sky on 04 May 2018
Sunrise
06:35
Sunset
20:24
Twilight ends
22:03
Twilight begins
04:56

18-day old moon
Waning Gibbous

78%

18 days old

Planets
Rise Culm. Set
Mercury 05:38 11:53 18:08
Venus 08:05 15:25 22:44
Moon 00:04 05:02 10:00
Mars 01:42 06:32 11:22
Jupiter 20:34 01:51 07:04
Saturn 00:31 05:22 10:13
All times shown in MDT.

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

15 Jun 2017  –  Saturn at opposition
27 Jun 2018  –  Saturn at opposition
09 Jul 2019  –  Saturn at opposition
20 Jul 2020  –  Saturn at opposition

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None available.

Washington

Latitude:
Longitude:
Timezone:

37.13°N
113.51°W
MST

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