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Close approach of the Moon and Jupiter

Dominic Ford, Editor
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The sky at

The Moon and Jupiter will make a close approach, passing within 0°21' of each other. The Moon will be 28 days old.

From Cambridge however, the pair will not be observable – they will reach their highest point in the sky during daytime and will be no higher than 7° above the horizon at dawn.

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The Moon will be at mag -9.0; and Jupiter will be at mag -1.9. Both objects will lie in the constellation Sagittarius.

They will be close enough to fit within the field of view of a telescope, but will also be visible to the naked eye or through a pair of binoculars.

At around the same time, the pair will also share the same right ascension – called a conjunction.

A graph of the angular separation between the Moon and Jupiter 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 18h49m40s -23°14' Sagittarius -9.0 30'40"5
Jupiter 18h49m40s -22°53' Sagittarius -1.9 31"4

The coordinates above are given in J2000.0. The pair will be at an angular separation of 20° from the Sun, which is in Capricornus at this time of year.

The sky on 22 January 2020
Sunrise
07:07
Sunset
16:44
Twilight ends
18:22
Twilight begins
05:29

27-day old moon
Waning Crescent

3%

27 days old

Planets
Rise Culm. Set
Mercury 07:44 12:30 17:17
Venus 08:59 14:29 20:00
Moon 05:29 10:01 14:34
Mars 03:48 08:25 13:01
Jupiter 05:56 10:29 15:02
Saturn 06:41 11:21 16:01
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

27 Dec 2019  –  Jupiter at solar conjunction
14 Jul 2020  –  Jupiter at opposition
28 Jan 2021  –  Jupiter at solar conjunction
19 Aug 2021  –  Jupiter at opposition

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Cambridge

Latitude:
Longitude:
Timezone:

42.38°N
71.11°W
EST

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