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Close approach of the Moon and M45

Dominic Ford, Editor
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The sky at

The Moon and M45 will make a close approach, passing within 0°55' of each other. The Moon will be 23 days old.

From Ashburn, the pair will be visible in the dawn sky, rising at 23:45 (EDT) and reaching an altitude of 68° above the south-eastern horizon before fading from view as dawn breaks around 06:06.

Begin typing the name of a town near to you, and then select the town from the list of options which appear below.

The Moon will be at mag -11.8; and M45 will be at mag 1.3. Both objects will lie in the constellation Taurus.

They will be a little too widely separated to fit comfortably within the field of view of a telescope, but will be visible to the naked eye or through a pair of binoculars.

A graph of the angular separation between the Moon and M45 around the time of closest approach is available here.

The positions of the pair at the moment of closest approach will be as follows:

Object Right Ascension Declination Constellation Magnitude Angular Size
The Moon 03h46m30s +24°59' Taurus -11.8 32'14"9
M45 03h47m30s +24°06' Taurus 1.3 109'59"9

The coordinates above are given in J2000.0. The pair will be at an angular separation of 83° from the Sun, which is in Leo at this time of year.

The sky on 16 August 2025
Sunrise
06:24
Sunset
20:03
Twilight ends
21:43
Twilight begins
04:44

23-day old moon
Waning Crescent

44%

23 days old

Planets
Rise Culm. Set
Mercury 04:58 12:00 19:01
Venus 03:33 10:51 18:09
Moon 23:35 07:03 14:30
Mars 09:54 15:51 21:48
Jupiter 03:11 10:33 17:55
Saturn 21:37 03:37 09:34
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.

Image credit

None available.

Ashburn

Latitude:
Longitude:
Timezone:

39.04°N
77.49°W
EDT

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