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Conjunction of Jupiter and Mercury

Dominic Ford, Editor
From the Conjunctions feed

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The sky at

Jupiter and Mercury will share the same right ascension, with Jupiter passing 3°16' to the north of Mercury.

From Ashburn however, the pair will not be observable – they will reach their highest point in the sky during daytime and will be no higher than 7° above the horizon at dusk.

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Jupiter will be at mag -1.7, and Mercury at mag -0.2, both in the constellation Libra.

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.

A graph of the angular separation between Jupiter and Mercury 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
Jupiter 15h42m20s -18°58' Libra -1.7 30"6
Mercury 15h42m20s -22°14' Libra -0.2 5"8

The coordinates above are given in J2000.0. The pair will be at an angular separation of 21° from the Sun, which is in Virgo at this time of year.

The sky on 29 October 2018
Sunrise
07:34
Sunset
18:13
Twilight ends
19:43
Twilight begins
06:04

20-day old moon
Waning Gibbous

67%

20 days old

Planets
Rise Culm. Set
Mercury 09:32 14:19 19:05
Venus 07:21 12:26 17:31
Moon 22:45 05:03 12:19
Mars 15:04 20:09 01:16
Jupiter 09:22 14:21 19:19
Saturn 12:14 16:58 21:41
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

08 May 2018  –  Jupiter at opposition
26 Nov 2018  –  Jupiter at solar conjunction
10 Jun 2019  –  Jupiter at opposition
27 Dec 2019  –  Jupiter at solar conjunction

Image credit

None available.

Ashburn

Latitude:
Longitude:
Timezone:

39.04°N
77.49°W
EDT

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