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 5°15' of each other. The Moon will be 7 days old.

From Cambridge , the pair will become visible at around 17:05 (EST), 24° above your southern horizon, as dusk fades to darkness. They will then sink towards the horizon, setting at 21:14.

The Moon will be at mag -11.5; and Mars will be at mag 0.4. Both objects will lie in the constellation Sagittarius.

They will be too widely separated to fit within the field of view of a telescope or pair of binoculars, but will be visible to the naked eye.

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 19h57m50s 17°12'S Sagittarius -11.5 30'19"6
Mars 20h00m40s 22°25'S Sagittarius 0.4 7"2

The coordinates above are given in J2000.0. The pair will be at an angular separation of 73° from the Sun, which is in Libra at this time of year.

The sky on 6 Nov 2016

The sky on 6 November 2016
Sunrise
06:22
Sunset
16:31
Twilight ends
18:07
Twilight begins
04:46


Waxing Crescent

40%

7 days old

Planets
Rise Culm. Set
Mercury 06:58 11:50 16:43
Venus 09:46 14:08 18:30
Moon 11:59 17:00 22:04
Mars 12:04 16:39 21:15
Jupiter 03:36 09:25 15:15
Saturn 08:52 13:33 18:13
All times shown in EST.

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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26 Jun 2018  –  Mars enters retrograde motion
27 Jul 2018  –  Mars at opposition
31 Jul 2018  –  Mars at perigee

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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