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The Moon at aphelion

Thu, 01 Feb 2018 at14:03 EST(18 days ago)
19:03 UTC

Dominic Ford, Editor
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The Moon's monthly orbit around the Earth will carry it to its furthest point from the Sun – its aphelion – at a distance of 0.9877 AU from the Sun.

This happens at around the time when the Moon's orbit carries it around the far side of the Earth as seen from the Sun, at around the same time that it passes full moon.

At the moment of the Moon's perihelion, the Earth will lie at a distance of 0.9854 AU from the Sun, and the Moon will lie at a distance of 0.9878 AU from the Sun.

This distance between the Earth and Moon will be 0.0024 AU (364,000 km).

The exact positions of the Sun and Moon in the sky will be:

Object Right Ascension Declination Constellation Angular Size
The Moon 10h08m50s +12°52' Leo 32'48"
Sun (centre) 21h00m -17°01' Capricornus 32'27"

The coordinates above are given in J2000.0.

The sky on 01 February 2018
Sunrise 07:15
Sunset 17:29
Twilight ends
Twilight begins

15-day old moon
Age of Moon
15 days

All times shown in EST.
Rise Culm. Set
Mercury 06:50 11:39 16:28
Venus 07:39 12:46 17:53
Moon 19:17 01:00 07:53
Mars 02:35 07:29 12:23
Jupiter 01:33 06:39 11:45
Saturn 04:58 09:43 14:27


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

31 Jan 2018, 08:28 EST  –  Full Moon
07 Feb 2018, 10:55 EST  –  Moon at Last Quarter
15 Feb 2018, 16:07 EST  –  New Moon
23 Feb 2018, 03:10 EST  –  Moon at First Quarter

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