Simulated image courtesy of Tom Ruen.

Moon at Last Quarter

Dominic Ford, Editor
From the Moon feed

Objects: The Moon
Please wait
Loading 0/4
Click and drag to rotate
Mouse wheel to zoom in/out
Touch with mouse to dismiss
The sky at

The Moon will pass last quarter phase, rising in the middle of the night and appearing prominent in the pre-dawn sky.

From Cambridge, it will be visible from soon after it rises, at 01:23, until soon before it sets at 09:52.

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

At this time in its monthly cycle of phases, it appears almost exactly half illuminated.

The Moon orbits the Earth once every four weeks, causing its phases to cycle through new moon, first quarter, full moon, last quarter, and back to new moon once every 29.5 days.

As it progresses through this cycle, it is visible at different times of day. At last quarter, it rises in the middle of the night and appears high in the sky by dawn. It sets at around lunchtime. More information about the Moon's phases is available here.

Observing the Moon at last quarter

Over coming days, the Moon will rise later each day, so that it is visible for less time before sunrise and rises less far above the eastern horizon before dawn. By the time it reaches new moon, it will rise at around dawn and set at around dusk, making it visible only during the daytime.

Its daily progress is charted below, with all times are given in Cambridge local time.

Date Sun
rises at
Moon
rises at
Altitude of Moon
at sunrise
Direction of Moon
at sunrise
23 Feb 202706:2719:5210°west
24 Feb 202706:2621:0413°south-west
25 Feb 202706:2422:1616°south-west
26 Feb 202706:2323:2618°south-west
27 Feb 202706:2100:3419°south
28 Feb 202706:1901:3719°south
01 Mar 202706:1802:3418°south
02 Mar 202706:1603:2217°south
03 Mar 202706:1504:0215°south-east
04 Mar 202706:1304:3513°south-east
05 Mar 202706:1105:0210°south-east
06 Mar 202706:1005:25south-east

The exact moment of last quarter

The exact moment of last quarter is defined as the time when the Moon's ecliptic longitude is exactly 90° away from the Sun's ecliptic longitude, as observed from the center of the Earth. However, the Moon does not appear in any way special at this instant in time, and a last quarter moon can be observed at any time in the pre-dawn sky.

At the moment it reaches last quarter, the Moon's distance from the Earth will be 399,000 km. Its celestial coordinates will be as follows:

Object Right Ascension Declination Constellation Angular Size
The Moon 16h25m40s 26°43'S Scorpius 29'52"

The coordinates above are given in J2000.0.

The sky on 28 Feb 2027

The sky on 28 February 2027
Sunrise
06:19
Sunset
17:31
Twilight ends
19:05
Twilight begins
04:46

22-day old moon
Waning Crescent

45%

22 days old

Planets
Rise Culm. Set
Mercury 05:23 10:41 15:59
Venus 04:27 09:15 14:02
Moon 01:37 05:50 10:00
Mars 16:05 23:11 06:18
Jupiter 15:34 22:38 05:42
Saturn 07:47 14:01 20:14
All times shown in EST.

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

28 Feb 2027  –  Moon at Last Quarter
08 Mar 2027  –  New Moon
15 Mar 2027  –  Moon at First Quarter
22 Mar 2027  –  Full Moon

Image credit

Simulated image courtesy of Tom Ruen.

Share

Cambridge

Latitude:
Longitude:
Timezone:

42.38°N
71.11°W
EST

Color scheme