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 1.0136 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 1.0160 AU from the Sun, and the Moon will lie at a distance of 1.0136 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 08h45m40s 17°07'N Cancer 33'20"
Sun (centre) 08h08m +20°09' Cancer 31'29"

The coordinates above are given in J2000.0.

The sky on 14 June 2021
Sunrise
05:11
Sunset
21:11
Twilight ends
--:--
Twilight begins
02:03

4-day old moon
Waxing Crescent

18%

4 days old

Planets
Rise Culm. Set
Mercury 05:13 12:45 20:18
Venus 06:42 14:42 22:43
Moon 08:52 16:53 00:43
Mars 08:08 15:52 23:36
Jupiter 00:44 05:56 11:07
Saturn 00:00 04:42 09:24
All times shown in PDT.

Warning

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.

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

21 Jul 2009  –  New Moon
28 Jul 2009  –  Moon at First Quarter
05 Aug 2009  –  Full Moon
13 Aug 2009  –  Moon at Last Quarter

Image credit

Simulated image courtesy of Tom Ruen.

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