Waxing Gibbous on

Moon phase on 12 December 2013 Thursday is Waxing Gibbous, 10 days young Moon is in Aries.

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Moon phase for

Lunar calendar 2013 | December 2013

Waxing Gibbous phase
Waxing Gibbous phase
Image credit: NASA/Goddard Space Flight Center Scientific Visualization Studio.

Waxing Gibbous 78% illuminated

Waxing Gibbous is the lunar phase on . Seen from Earth, illuminated fraction of the Moon surface is 78% and growing larger. The 10 days young Moon is in ♈ Aries.

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Moon phases for next 7 days

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Moon phase and lunation details

2 days after First Quarter

Previous main lunar phase is the First Quarter before 2 days on 9 December 2013 at 15:12.

Moonrise and moonset

Moon rises in the afternoon and sets after midnight to early morning. It is visible to the southeast in early evening and it is up for most of the night.

Moon in ♈ Aries

Moon is passing about ∠25° of ♈ Aries tropical zodiac sector.

Apparent angular diameter ∠1861"

Lunar disc appears visually 4.6% narrower than solar disc. Moon and Sun apparent angular diameters are ∠1861" and ∠1949".

Cold Moon after 4 days

Next Full Moon is the Cold Moon of December 2013 after 4 days on 17 December 2013 at 09:28.

Upcoming main Moon phases

Moderate tide

There is medium ocean tide on this date. Sun and Moon gravitational forces are not aligned, but meet at very acute angle, so their combined tidal force is moderate.

Lunation 172 / 1125

The Moon is 10 days young. Earth's natural satellite is moving from the first to the middle part of current synodic month. This is lunation 172 of Meeus index or 1125 from Brown series.

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Synodic month length 29.45 days

The length of the lunation is 29 days, 10 hours and 52 minutes. This is the year's shortest synodic month of 2013. It is 28 minutes longer than the next lunation's length. The lengths of the following synodic months are going to decreasing with the true anomaly getting closer to the value it has at the point of New Moon at perigee (∠0° or ∠360°).

Lunation length shorter than mean

The length of the current synodic month is 1 hour and 52 minutes shorter than the mean synodic month length. It is 4 hours and 17 minutes longer compared to 21st century's shortest synodic month length.

Lunar orbit position on

True anomaly ∠336.4°

At the beginning of the lunation cycle the true anomaly is ∠336.4°. At the beginning of next synodic month the true anomaly is going to be ∠353°.

Moon before perigee

8 days after point of perigee on 4 December 2013 at 10:15 in ♑ Capricorn. The lunar orbit is getting widen, while the Moon is moving away from the Earth. It will keep this direction over the next 7 days, until the Moon reaches the point of next apogee on 19 December 2013 at 23:49 in ♋ Cancer.

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Distance to Moon 385 154 km

The Moon is 385 154 km (239 324 mi) away from Earth and getting further over the next 7 days until the point apogee when Earth-Moon distance is going to be 406 269 km (252 444 mi).

Moon before descending node

11 days after ascending node on 30 November 2013 at 16:59 in ♏ Scorpio. The Moon is located north of the ecliptic over the following day, until the lunar orbit crosses from North to South in descending node on 13 December 2013 at 10:10 in ♉ Taurus.

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Draconic month

11 days since the beginning of current draconic month in ♏ Scorpio, the Moon is navigating from the beginning to the first part of the cycle.

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Moon before northern standstill

8 days since the previous standstill on 3 December 2013 at 16:38 in ♐ Sagittarius when the Moon has reached South declination of ∠-19.552°, the lunar orbit is extending northward over the next 4 days to face maximum declination of ∠19.570° at the point of next northern standstill on 17 December 2013 at 01:00 in ♊ Gemini.

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Syzygy in 4 days

In 4 days on 17 December 2013 at 09:28 in ♊ Gemini 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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