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 1.0025 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 1.0004 AU from the Sun, and the Moon will lie at a distance of 1.0029 AU from the Sun.

This distance between the Earth and Moon will be 0.0024 AU (359,000 km).

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

Object Right Ascension Declination Constellation Angular Size
The Moon 14h51m20s 19°51'S Libra 33'11"
Sun (centre) 00h56m +06°03' Pisces 31'58"

The coordinates above are given in J2000.0.

The sky on 17 May 2021
Sunrise
05:55
Sunset
20:19
Twilight ends
22:07
Twilight begins
04:07

6-day old moon
Waxing Crescent

33%

6 days old

Planets
Rise Culm. Set
Mercury 07:05 14:38 22:12
Venus 06:43 14:04 21:25
Moon 10:17 17:58 01:36
Mars 09:02 16:30 23:58
Jupiter 02:17 07:39 13:02
Saturn 01:30 06:34 11:38
All times shown in EDT.

Source

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

02 Apr 1950  –  Full Moon
09 Apr 1950  –  Moon at Last Quarter
17 Apr 1950  –  New Moon
25 Apr 1950  –  Moon at First Quarter

Image credit

Simulated image courtesy of Tom Ruen.

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