First Quarter on

Moon phase on 16 September 2010 Thursday is First Quarter, 8 days young Moon is in Capricorn.

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Moon phase for

Lunar calendar 2010 | September 2010

First Quarter phase
First Quarter phase
Image credit: NASA/Goddard Space Flight Center Scientific Visualization Studio.

First Quarter 62% illuminated

First Quarter is the lunar phase on . Seen from Earth, illuminated fraction of the Moon surface is 62% and growing larger. The 8 days young Moon is in ♑ Capricorn.

* The exact date and time of this First Quarter phase is on 15 September 2010 at 05:50 UTC.

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Moon phases for next 7 days

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Moon phase and lunation details

Moonrise and moonset

Moon rises at noon and sets at midnight. It is visible high in the southern sky in early evening.

Moon in ♑ Capricorn

Moon is passing about ∠8° of ♑ Capricorn tropical zodiac sector.

Apparent angular diameter ∠1819"

Lunar disc appears visually 4.8% narrower than solar disc. Moon and Sun apparent angular diameters are ∠1819" and ∠1909".

Harvest Moon after 6 days

Next Full Moon is the Harvest Moon of September 2010 after 6 days on 23 September 2010 at 09:17.

Upcoming main Moon phases

Neap tide

There is low ocean tide on this date. Sun and Moon gravitational forces are not aligned, but meet at big angle, so their combined tidal force is weak.

Lunation 132 / 1085

The Moon is 8 days young. Earth's natural satellite is moving through the first part of current synodic month. This is lunation 132 of Meeus index or 1085 from Brown series.

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Synodic month length 29.34 days

The length of the lunation is 29 days, 8 hours and 15 minutes. It is 1 hour and 52 minutes shorter than the next lunation's length. The lengths of the following synodic months are going to increasing with the true anomaly getting closer to the value it has at the point of New Moon at apogee (∠180°).

Lunation length shorter than mean

The length of the current synodic month is 4 hours and 29 minutes shorter than the mean synodic month length. It is 1 hour and 40 minutes longer compared to 21st century's shortest synodic month length.

Lunar orbit position on

True anomaly ∠4.6°

At the beginning of the lunation cycle the true anomaly is ∠4.6°. At the beginning of next synodic month the true anomaly is going to be ∠20.4°.

Moon before perigee

8 days after point of perigee on 8 September 2010 at 04:00 in ♍ Virgo. The lunar orbit is getting widen, while the Moon is moving away from the Earth. It will keep this direction over the next 4 days, until the Moon reaches the point of next apogee on 21 September 2010 at 08:03 in ♓ Pisces.

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Distance to Moon 393 955 km

The Moon is 393 955 km (244 792 mi) away from Earth and getting further over the next 4 days until the point apogee when Earth-Moon distance is going to be 406 169 km (252 382 mi).

Moon in ascending node

Moon is in ascending node in ♑ Capricorn at 13:56 crossing the ecliptic from South to North to meet descending node 14 days later on 1 October 2010 at 02:42 in ♋ Cancer.

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New draconic month

At 13:56 the Moon completes the previous draconic month and enters the new one.

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Moon after southern standstill

1 day since the previous standstill on 14 September 2010 at 23:47 in ♐ Sagittarius when the Moon has reached South declination of ∠-24.710°, the lunar orbit is extending northward over the next 13 days to face maximum declination of ∠24.555° at the point of next northern standstill on 29 September 2010 at 17:37 in ♊ Gemini.

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Syzygy in 6 days

In 6 days on 23 September 2010 at 09:17 in ♈ Aries the Moon is going to be in a Full Moon geocentric opposition with the Sun and thus forming the next Sun-Earth-Moon syzygy alignment.

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