Conjunction between the Moon and M44

2018 Mar 26

Dominic Ford – originally published on

The Moon and M44 will make a close approach, passing within 2°07′ of each other.

From London (click to change), the pair will be visible in the evening sky. They will become visible at around 19:41 (BST) as the dusk sky fades, 52° above your south-eastern horizon. They will then reach its highest point in the sky at 21:19, 58° above your southern horizon. They will continue to be observable until around 04:14, when they sink to 7° above your western horizon.

At the moment of closest approach, the Moon will be at mag -12.4, and M44 at mag 3.1, both in the constellation Cancer.

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 M44 at the moment of closest approach will be as follows:

Object Right Ascension Declination Constellation Magnitude Angular Size
The Moon 08h38m30s +17°53′ Cancer -12.4 32’21″2
M44 08h40m00s +19°58′ Cancer 3.1 1’35″0

The coordinates above are given in J2000.0. The pair will be at an angular separation of 121° from the Sun, which is in Pisces at this time of year.

The details of this observing event were provided courtesy of