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The Moon at perihelion

Dominic Ford, Editor
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Ashburn
The sky at

The Moon's monthly orbit around the Earth will carry it to its closest point to the Sun – its perihelion – at a distance of 1.0045 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 1.0066 AU from the Sun, and the Moon will lie at a distance of 1.0041 AU from the Sun.

This distance between the Earth and Moon will be 0.0025 AU (373,000 km).

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

Object Right Ascension Declination Constellation Angular Size
The Moon 13h23m10s -03°22' Virgo 31'58"
Sun (centre) 11h19m +04°20' Leo 31'46"

The coordinates above are given in J2000.0.

The sky on 11 September 2018
Sunrise
06:46
Sunset
19:24
Twilight ends
20:55
Twilight begins
05:15

2-day old moon
Waxing Crescent

7%

2 days old

Planets
Rise Culm. Set
Mercury 06:02 12:36 19:10
Venus 10:28 15:37 20:45
Moon 08:56 14:53 20:51
Mars 17:24 21:58 02:36
Jupiter 11:44 16:51 21:59
Saturn 15:12 19:56 00:44
All times shown in EDT.

Source

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

09 Sep 2018, 14:03 EDT  –  New Moon
16 Sep 2018, 19:16 EDT  –  Moon at First Quarter
24 Sep 2018, 22:54 EDT  –  Full Moon
02 Oct 2018, 05:47 EDT  –  Moon at Last Quarter

Image credit

None available.

Ashburn

Latitude:
Longitude:
Timezone:

39.04°N
77.49°W
EDT

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