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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 1.0140 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 1.0164 AU from the Sun, and the Moon will lie at a distance of 1.0140 AU from the Sun.

This distance between the Earth and Moon will be 0.0024 AU (358,000 km).

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

Object Right Ascension Declination Constellation Angular Size
The Moon 05h50m10s +19°06' Orion 33'21"
Sun (centre) 06h09m +23°25' Gemini 31'28"

The coordinates above are given in J2000.0.

The sky on 23 June 2017
Twilight ends
Twilight begins

29-day old moon
Waning Crescent


29 days old

Rise Culm. Set
Mercury 05:15 12:58 20:41
Venus 02:43 09:40 16:38
Moon 05:04 12:20 19:36
Mars 05:52 13:31 21:10
Jupiter 13:38 19:27 01:19
Saturn 19:30 00:12 04:49
All times shown in EDT.


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 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

23 Jun 2017  –  The Moon at perihelion
23 Jun 2017  –  New Moon
30 Jun 2017  –  Moon at First Quarter
06 Jul 2017  –  The Moon at apogee

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