First Quarter on

Moon phase on 15 September 2010 Wednesday is First Quarter, 7 days young Moon is in Sagittarius.

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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 53% illuminated

First Quarter is the lunar phase on . Seen from Earth, illuminated fraction of the Moon surface is 53% and growing larger. The 7 days young Moon is in ♐ Sagittarius.

* 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 ♐ Sagittarius

Moon is leaving the last ∠4° of ♐ Sagittarius tropical zodiac sector and will enter ♑ Capricorn later.

Apparent angular diameter ∠1840"

Lunar disc appears visually 3.6% narrower than solar disc. Moon and Sun apparent angular diameters are ∠1840" and ∠1908".

Harvest Moon after 7 days

Next Full Moon is the Harvest Moon of September 2010 after 7 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 7 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.

PreviousCurrent lunationNext

Synodic month length 29.34 days

Length of current 132 lunation is 29 days, 8 hours and 15 minutes. It is 1 hour and 52 minutes shorter than next lunation 133 length.

Lunation length shorter than mean

Length of current synodic month is 4 hours and 29 minutes shorter than the mean length of synodic month, but it is still 1 hour and 40 minutes longer, compared to 21st century shortest.

Lunar orbit position on

True anomaly ∠4.6°

This New Moon true anomaly is ∠4.6°. At beginning of next synodic month true anomaly will be ∠20.4°. The length of upcoming synodic months will keep increasing since the true anomaly gets closer to the value of New Moon at point of apogee (∠180°).

Moon before apogee

7 days after point of perigee on 8 September 2010 at 04:00 in ♍ Virgo. The lunar orbit is getting wider, while the Moon is moving outward the Earth. It will keep this direction for the next 5 days, until it get to the point of next apogee on 21 September 2010 at 08:03 in ♓ Pisces.

Previous perigeeNext apogee

Distance to Moon 389 493 km

Moon is 389 493 km (242 020 mi) away from Earth on this date. Moon moves farther next 5 days until apogee, when Earth-Moon distance will reach 406 169 km (252 382 mi).

Moon before ascending node

11 days after its descending node on 4 September 2010 at 00:16 in ♋ Cancer, the Moon is following the southern part of its orbit for the next day, until it will cross the ecliptic from South to North in ascending node on 16 September 2010 at 13:56 in ♑ Capricorn.

Previous nodeNext node

Draconic month

25 days after beginning of current draconic month in ♑ Capricorn, the Moon is moving from the second to the final part of it.

PreviousCurrent draconic monthNext

Moon after southern standstill

1 day after previous South standstill on 14 September 2010 at 23:47 in ♐ Sagittarius, when Moon has reached southern declination of ∠-24.710°. Next 14 days the lunar orbit moves northward to face North declination of ∠24.555° in the next northern standstill on 29 September 2010 at 17:37 in ♊ Gemini.

Previous standstillNext standstill

Syzygy in 7 days

After 7 days on 23 September 2010 at 09:17 in ♈ Aries, the Moon will be in First Quarter geocentric opposition with the Sun and this alignment forms next Sun-Earth-Moon syzygy.

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