Simulated image courtesy of Tom Ruen.

The Moon at perihelion

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 closest point to the Sun – its perihelion – at a distance of 1.0125 AU from the Sun.

This happens at around the time when the Moon's orbit carries it between the Sun and the Earth, at around the same time that it passes new moon.

At the moment of the Moon's perihelion, the Earth will lie at a distance of 1.0152 AU from the Sun, and the Moon will lie at a distance of 1.0125 AU from the Sun.

This distance between the Earth and Moon will be 0.0027 AU (405,000 km).

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

Object Right Ascension Declination Constellation Angular Size
The Moon 04h08m50s 20°22'N Taurus 29'25"
Sun (centre) 05h08m 22°55'N Taurus 31'30"

The coordinates above are given in J2000.0.

The sky on 8 Jun 2021

The sky on 8 June 2021
Twilight ends
Twilight begins

28-day old moon
Waning Crescent


28 days old

Rise Culm. Set
Mercury 06:02 13:01 20:00
Venus 07:00 14:10 21:21
Moon 04:27 11:29 18:37
Mars 08:37 15:39 22:42
Jupiter 00:23 05:56 11:28
Saturn 23:26 04:42 09:58
All times shown in PDT.


Never attempt to point a pair of binoculars or a telescope at an object close to the Sun. Doing so may result in immediate and permanent blindness.


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 Jun 2021  –  Moon at Last Quarter
10 Jun 2021  –  New Moon
17 Jun 2021  –  Moon at First Quarter
24 Jun 2021  –  Full Moon

Image credit

Simulated image courtesy of Tom Ruen.


San Diego



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