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BAA Observing calendar

Conjunction between the Moon and Venus

Monday, 2018, July 16 - 05:22

Dominic Ford – originally published on

The Moon and Venus will make a close approach, passing within 1°33' of each other.

From London (click to change), the pair will be difficult to observe as they will appear no higher than 11° above the horizon. They will become visible at around 21:35 (BST) as the dusk sky fades, 11° above your western horizon. They will then sink towards the horizon, setting 1 hour and 47 minutes after the Sun at 22:53.

At the moment of closest approach, the Moon will be at mag -10.6, and Venus at mag -4.7, 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 Venus at the moment of closest approach will be as follows:

Object Right Ascension Declination Constellation Magnitude Angular Size
The Moon 10h36m30s +11°41' Leo -10.6 32'45"4
Venus 10h34m40s +10°11' Leo -4.7 17"6

The coordinates above are given in J2000.0. The pair will be at an angular separation of 43° from the Sun, which is in Gemini at this time of year.

The details of this observing event were provided courtesy of