Conjunction between the Moon and Mars

2015 Nov 7

Dominic Ford – originally published on

The Moon and Mars will make a close approach, passing within 1°43' of each other.

From London (click to change), the pair will be visible in the dawn sky. They will rise at 02:27 (GMT), 4 hours and 37 minutes before the Sun, and attain an altitude of 34° above the south-eastern horizon before fading from view as dawn breaks at around 06:40.

At the moment of closest approach, the Moon will be at mag -10.6, and Mars at mag 1.4, both in the constellation Virgo.

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

Object Right Ascension Declination Constellation Magnitude Angular Size
The Moon 11h47m00s +01°03' Virgo -10.6 29'26"8
Mars 11h49m10s +02°42' Virgo 1.4 4"3

The coordinates above are given in J2000.0. The pair will be at an angular separation of 47° from the Sun, which is in Libra at this time of year.

The details of this observing event were provided courtesy of