Conjunction between the Moon and Jupiter

2017 May 7

Dominic Ford – originally published on In-The-Sky.org

The Moon and Jupiter will make a close approach, passing within 1°59' of each other.

From London (click to change), the pair will be visible in the evening sky. They will become visible at around 20:58 (BST) as the dusk sky fades, 28° above your south-eastern horizon. They will then reach its highest point in the sky at 22:52, 34° above your southern horizon. They will continue to be observable until around 03:42, when they sink to 8° above your western horizon.

At the moment of closest approach, the Moon will be at mag -12.5, and Jupiter at mag -2.4, both in the constellation Virgo.

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.

The precise positions of the Moon and Jupiter at the moment of closest approach will be as follows:

Object Right Ascension Declination Constellation Magnitude Angular Size
The Moon 12h58m20s -02°26' Virgo -12.5 29'58"0
Jupiter 12h55m50s -04°18' Virgo -2.4 42"0

The coordinates above are given in J2000.0. The pair will be at an angular separation of 146° from the Sun, which is in Aries at this time of year.


The details of this observing event were provided courtesy of In-The-Sky.org

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