Conjunction between the Moon and Jupiter

2015 Dec 4

Dominic Ford – originally published on

The Moon and Jupiter will make a close approach, passing within 1°42' of each other.

From London (click to change), the pair will be visible in the morning sky. They will become accessible at around 01:07, when they rise 7° above your eastern horizon. They will then reach its highest point in the sky at 06:38, 43° above your southern horizon. They will be lost to dawn twilight at around 07:20, 42° above your southern horizon.

At the moment of closest approach, the Moon will be at mag -11.6, and Jupiter at mag -2.0, 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 11h27m00s +02°55' Leo -11.6 29'35"6
Jupiter 11h29m10s +04°32' Leo -2.0 35"1

The coordinates above are given in J2000.0. The pair will be at an angular separation of 80° from the Sun, which is in Ophiuchus at this time of year.

The details of this observing event were provided courtesy of