Close approach of the Moon and Mars

Dominic Ford, Editor
From the Appulses feed

Tags: Appulse

The Moon and Mars will make a close approach, passing within 4°50' of each other. The Moon will be 4 days old.

From Fairfield however, the pair will not be observable – they will reach their highest point in the sky during daytime and will be no higher than 11° above the horizon at dusk.

The Moon will be at mag -10.8; and Mars will be at mag 1.3. Both objects will lie in the constellation Virgo.

They 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.

At around the same time, the pair will also share the same right ascension – called a conjunction.

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

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

Object Right Ascension Declination Constellation Magnitude Angular Size
The Moon 13h48m10s 16°39'S Virgo -10.8 31'41"6
Mars 13h55m30s 12°09'S Virgo 1.3 4"7

The coordinates above are given in J2000.0. The pair will be at an angular separation of 49° from the Sun, which is in Leo at this time of year.

The sky on 4 Sep 2027

The sky on 4 September 2027
Sunrise
06:19
Sunset
19:21
Twilight ends
20:57
Twilight begins
04:42


Waxing Crescent

22%

4 days old

Planets
Rise Culm. Set
Mercury 08:02 14:03 20:04
Venus 06:52 13:16 19:40
Moon 11:07 16:07 21:00
Mars 10:34 15:54 21:13
Jupiter 06:03 12:39 19:15
Saturn 21:13 03:44 10:14
All times shown in EDT.

Source

The circumstances of this event were computed using the DE430 planetary ephemeris published by the Jet Propulsion Laboratory (JPL).

This event was automatically generated by searching the ephemeris for planetary alignments which are of interest to amateur astronomers, and the text above was generated based on an estimate of your location.

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Image credit

The Moon in conjunction with Venus and Jupiter, with the Very Large Telescope in the foreground. Image © Y. Beletsky, ESO, 2009.

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