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 a mere 21.0 arcminutes of each other. From some parts of the world, the Moon will pass in front of Mars, creating a lunar occultation. The Moon will be 11 days old.

From South El Monte , the pair will be visible in the evening sky, becoming accessible around 20:27 (PDT), 41° above your southern horizon, as dusk fades to darkness. They will then reach their highest point in the sky at 20:31, 41° above your southern horizon. They will continue to be observable until around 01:07, when they sink below 8° above your south-western horizon.

The Moon will be at mag -12.3; and Mars will be at mag -0.8. Both objects will lie in the constellation Virgo.

They will be close enough to fit within the field of view of a telescope, but will also 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 14h11m20s 15°13'S Virgo -12.3 31'54"4
Mars 14h11m40s 14°53'S Virgo -0.8 13"0

The coordinates above are given in J2000.0. The pair will be at an angular separation of 117° from the Sun, which is in Gemini at this time of year.

The sky on 29 Jun 2031

The sky on 29 June 2031
Sunrise
05:40
Sunset
20:06
Twilight ends
21:51
Twilight begins
03:55


Waxing Gibbous

78%

10 days old

Planets
Rise Culm. Set
Mercury 07:18 14:25 21:32
Venus 09:00 15:46 22:33
Moon 14:55 20:23 01:47
Mars 15:09 20:31 01:53
Jupiter 18:47 23:44 04:41
Saturn 04:14 11:18 18:22
All times shown in PDT.

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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