Simulated image courtesy of Tom Ruen.

The Moon at aphelion

Dominic Ford, Editor
From the Moon feed

Objects: The Moon
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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 0.9859 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 aphelion, the Earth will lie at a distance of 0.9833 AU from the Sun, and the Moon will lie at a distance of 0.9859 AU from the Sun.

This distance between the Earth and Moon will be 0.0026 AU (394,000 km).

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

Object Right Ascension Declination Constellation Angular Size
The Moon 06h12m40s 24°36'N Gemini 30'17"
Sun (centre) 18h35m 23°11'S Sagittarius 32'31"

The coordinates above are given in J2000.0.

The sky on 29 Dec 2020

The sky on 29 December 2020
Twilight ends
Twilight begins

15-day old moon
Waning Gibbous


15 days old

Rise Culm. Set
Mercury 07:20 12:14 17:09
Venus 05:16 10:19 15:22
Moon 16:34 23:59 07:25
Mars 12:17 18:48 01:19
Jupiter 08:22 13:30 18:39
Saturn 08:19 13:27 18:35
All times shown in PST.


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.

Related news

21 Dec 2020  –  Moon at First Quarter
29 Dec 2020  –  Full Moon
06 Jan 2021  –  Moon at Last Quarter
12 Jan 2021  –  New Moon

Image credit

Simulated image courtesy of Tom Ruen.


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