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Conjunction of Mercury and Eris

Dominic Ford, Editor
From the Conjunctions feed

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The sky at

Mercury and 136199 Eris will share the same right ascension, with Mercury passing 9°46' to the north of 136199 Eris.

From Washington however, the pair will not be observable – they will reach their highest point in the sky during daytime and will be 1° below the horizon at dawn.

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

Mercury will be at mag -0.1 in the constellation Pisces, and 136199 Eris at mag 18.8 in the neighbouring constellation of Cetus.

A graph of the angular separation between Mercury and 136199 Eris 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
Mercury 01h45m20s +07°51' Pisces -0.1 6"5
136199 Eris 01h45m20s -01°55' Cetus 18.8 0"0

The coordinates above are given in J2000.0. The pair will be at an angular separation of 23° from the Sun, which is in Aries at this time of year.

The sky on 11 May 2018
Sunrise
06:28
Sunset
20:30
Twilight ends
22:12
Twilight begins
04:46

25-day old moon
Waning Crescent

15%

25 days old

Planets
Rise Culm. Set
Mercury 05:34 12:00 18:27
Venus 08:10 15:34 22:57
Moon 04:36 10:29 16:22
Mars 01:27 06:18 11:09
Jupiter 20:03 01:20 06:33
Saturn 23:58 04:53 09:44
All times shown in MDT.

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

16 Oct 2017  –  136199 Eris at opposition
16 Oct 2018  –  136199 Eris at opposition
17 Oct 2019  –  136199 Eris at opposition
16 Oct 2020  –  136199 Eris at opposition

Image credit

None available.

Washington

Latitude:
Longitude:
Timezone:

37.13°N
113.51°W
MST

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