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Conjunction of the Moon and Mars

Dominic Ford, Editor
From the Conjunctions feed

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The sky at

The Moon and Mars will share the same right ascension, with the Moon passing 0°07' to the south of Mars. The Moon will be 5 days old.

At around the same time, the two objects will also make a close approach, technically called an appulse.

From Ashburn, the pair will become visible around 20:04 (EDT) as the dusk sky fades, 50° above your western horizon. They will then sink towards the horizon, setting at 00:44.

Begin typing the name of a town near to you, and then select the town from the list of options which appear below.

The Moon will be at mag -11.0, and Mars at mag 1.5, both in the constellation Taurus.

The pair 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.

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

The positions of the two objects at the moment of conjunction will be as follows:

Object Right Ascension Declination Constellation Magnitude Angular Size
The Moon 05h42m40s +24°42' Taurus -11.0 29'39"8
Mars 05h42m40s +24°50' Taurus 1.5 4"9

The coordinates above are given in J2000.0. The pair will be at an angular separation of 58° from the Sun, which is in Pisces at this time of year.

The sky on 17 April 2021
Sunrise
06:30
Sunset
19:48
Twilight ends
21:24
Twilight begins
04:54

5-day old moon
Waxing Crescent

23%

5 days old

Planets
Rise Culm. Set
Mercury 06:31 13:04 19:38
Venus 06:50 13:32 20:14
Moon 09:56 17:29 00:04
Mars 09:38 17:10 00:43
Jupiter 04:03 09:21 14:39
Saturn 03:23 08:27 13:30
All times shown in EDT.

Source

The circumstances of this event were computed using the DE405 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.

Related news

13 Oct 2020  –  Mars at opposition
12 Jul 2021  –  Mars at aphelion
20 Sep 2021  –  Mars at apogee
08 Oct 2021  –  Mars at solar conjunction

Image credit

None available.

Ashburn

Latitude:
Longitude:
Timezone:

39.04°N
77.49°W
EDT

Color scheme