Conjunction between the Moon and Jupiter

2015 Dec 31

Dominic Ford – originally published on

The Moon and Jupiter will make a close approach, passing within 1°23' of each other.

From London (click to change), the pair will be visible in the morning sky. They will become accessible at around 23:26, when they rise 7° above your eastern horizon. They will then reach its highest point in the sky at 04:59, 42° above your southern horizon. They will be lost to dawn twilight at around 07:41, 32° above your south-western horizon.

At the moment of closest approach, the Moon will be at mag -12.1, and Jupiter at mag -2.2, both in the constellation Leo.

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 11h34m10s +02°37' Leo -12.1 29'41"7
Jupiter 11h35m50s +03°56' Leo -2.2 38"1

The coordinates above are given in J2000.0. The pair will be at an angular separation of 106° from the Sun, which is in Sagittarius at this time of year.

The details of this observing event were provided courtesy of