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

Conjunction of the Moon and Jupiter

Dominic Ford, Editor
From the Conjunctions feed

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The sky at

The Moon and Jupiter will share the same right ascension, with the Moon passing 4°20' to the north of Jupiter. The Moon will be 24 days old.

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

From Ashburn, the pair will be visible in the dawn sky, rising at 02:42 (EST) – 4 hours and 45 minutes before the Sun – and reach an altitude of 33° above the southern horizon before fading from view as dawn breaks at around 07:07.

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The Moon will be at mag -11.2, and Jupiter at mag -1.9, both in the constellation Libra.

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 Jupiter 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 15h04m40s -11°55' Libra -11.2 29'51"2
Jupiter 15h04m40s -16°15' Libra -1.9 33"1

The coordinates above are given in J2000.0. The pair will be at an angular separation of 63° from the Sun, which is in Sagittarius at this time of year.

The sky on 11 January 2018
Sunrise
07:27
Sunset
17:06
Twilight ends
18:40
Twilight begins
05:52

24-day old moon
Waning Crescent

27%

24 days old

Planets
Rise Culm. Set
Mercury 06:04 10:47 15:30
Venus 07:35 12:19 17:04
Moon 02:43 08:04 13:25
Mars 02:53 07:59 13:04
Jupiter 02:42 07:50 12:59
Saturn 06:11 10:55 15:40
All times shown in EST.

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

07 Apr 2017, 17:28 EDT  –  Jupiter at opposition
08 May 2018, 20:28 EDT  –  Jupiter at opposition
10 Jun 2019, 11:17 EDT  –  Jupiter at opposition
14 Jul 2020, 03:48 EDT  –  Jupiter 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
EST

Color scheme