Conjunction between the Moon and Saturn

2015 Jun 1

Dominic Ford – originally published on

The Moon and Saturn will make a close approach, passing within 1°51' of each other.

From London (click to change), the pair will be visible in the evening sky. They will become visible at around 21:35 (GMT) as the dusk sky fades, 11° above your south-eastern horizon. They will then reach its highest point in the sky at 00:20, 20° above your southern horizon. They will continue to be observable until around 03:38, when they sink to 8° above your south-western horizon.

At the moment of closest approach, the Moon will be at mag -12.6, and Saturn at mag 0.8, both in the constellation Libra.

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 Saturn at the moment of closest approach will be as follows:

Object Right Ascension Declination Constellation Magnitude Angular Size
The Moon 15h57m10s -16°19' Libra -12.6 30'46"4
Saturn 15h56m00s -18°10' Libra 0.8 18"5

The coordinates above are given in J2000.0. The pair will be at an angular separation of 169° from the Sun, which is in Taurus at this time of year.

The details of this observing event were provided courtesy of