Close approach of the Moon and M44

Tuesday 24th Sep 201921:01

The Moon and M44 will make a close approach, passing within 0°42' of each other. The Moon will be 25 days old.

From London, the pair will be visible in the dawn sky, rising at 01:38 (BST) – 5 hours and 14 minutes before the Sun – and reach an altitude of 42° above the south-eastern horizon before fading from view as dawn breaks at around 06:29.

The Moon will be at mag -11.0, and M44 at mag 3.1, both in the constellation Cancer.

The pair will be a little too widely separated to fit comfortably within the field of view of a telescope, but will be visible through a pair of binoculars.

A graph of the angular separation between the Moon and M44 around the time of closest approach is available here.

The positions of the two objects at the moment of closest approach will be as follows:

Object Right Ascension Declination Constellation Magnitude Angular Size
The Moon 08h40m50s +20°22' Cancer -11.0 32'35"8
M44 08h40m20s +19°40' Cancer 3.1 95'00"0

The coordinates above are given in J2000.0. The pair will be at an angular separation of 54° from the Sun, which is in Virgo at this time of year.

This entry in the observing calendar was provided by