Conjunction between the Moon and Jupiter

2015 Jan 8

Dominic Ford – originally published on

The Moon and Jupiter will make a close approach, passing within 4°52' of each other.

From London (click to change), the pair will be visible in the morning sky. They will become accessible at around 19:55, when they rise 7° above your eastern horizon. They will then reach its highest point in the sky at 02:25, 53° above your southern horizon. They will be lost to dawn twilight at around 07:38, 19° above your western horizon.

At the moment of closest approach, the Moon will be at mag -12.5, and Jupiter at mag -2.5, 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 09h29m00s +10°39' Leo -12.5 29'32"5
Jupiter 09h34m20s +15°20' Leo -2.5 43"0

The coordinates above are given in J2000.0. The pair will be at an angular separation of 145° from the Sun, which is in Sagittarius at this time of year.

The details of this observing event were provided courtesy of