Waning Gibbous on

Moon phase on 13 December 2011 Tuesday is Waning Gibbous, 17 days old Moon is in Cancer.

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Moon phase for

Lunar calendar 2011 | December 2011

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

Waning Gibbous 92% illuminated

Waning Gibbous is the lunar phase on . Seen from Earth, illuminated fraction of the Moon surface is 92% and getting smaller. The Moon is in ♋ Cancer.

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Moon phases for next 7 days

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Moon phase and lunation details

Moonrise and moonset

Moon rises in the evening and sets in the morning. It is visible to the southwest and it is high in the sky after midnight.

2 days after Full Moon

Previous main lunar phase is the Full Moon before 2 days on 10 December 2011 at 14:36.

Moon in ♋ Cancer

Moon is passing about ∠25° of ♋ Cancer tropical zodiac sector.

Upcoming main Moon phases

Cold Moon before 2 days

Next Full Moon is the Wolf Moon of January after 26 days on 9 January 2012 at 07:30.

Apparent angular diameter ∠1861"

Lunar disc appears visually 4.63% narrower than solar disc. Moon and Sun apparent angular diameters are ∠1861" and ∠1949".

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 147 / 1100

Moon is 17 days old. Earth's natural satellite is moving from the middle to the last part of current synodic month. This is lunation 147 of Meeus index or 1100 from Brown series.

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Synodic month length 29.5 days

Length of current 147 lunation is 29 days, 11 hours and 57 minutes. It is 1 hour and 36 minutes shorter than next lunation 148.

Lunation length shorter than mean

Length of current synodic month is 47 minutes shorter than the mean length of synodic month, but it is still 5 hours and 22 minutes longer, compared to 21st century shortest.

Lunar orbit position on

True anomaly ∠21.6°

This lunation true anomaly is ∠21.6°. At the beginning of next synodic month true anomaly is ∠42.1°. The length of upcoming synodic months increases since the true anomaly gets closer to the value of New Moon at point of apogee (∠180°).

Moon after apogee

7 days after point of apogee on 6 December 2011 at 01:13, lunar orbit gets closer while the Moon moves inward the Earth. It keeps this direction for next 8 days until it gets to the point of perigee on 22 December 2011 at 02:56.

Distance to Moon 385 168 km

Moon is 385 168 km (239 332 mi) away from Earth on this date. At previous apogee point before 7 days, distance is 405 414 km (251 913 mi). Moon moves closer next 8 days until perigee, when Earth-Moon distance reaches 364 801 km (226 677 mi).

Moon after descending node

3 days after its descending node on 10 December 2011 at 07:04, the Moon follows the southern part of its orbit for the next 9 days untill it crosses the ecliptic from South to North in ascending node on 23 December 2011 at 11:36.

Draconic month

17 days after its beginning, the Moon is moving from the second to the final part of current draconic month.

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Moon after northern standstill

2 days after previous North standstill on 10 December 2011 at 13:37, when Moon reaches northern declination of ∠22.554°, lunar orbit moves southward for the next 10 days to face South declination of ∠-22.554° in the next southern standstill on 23 December 2011 at 17:25.

Syzygy in 11 days

After 11 days the Moon is in New Moon conjunction with the Sun and this alignment forms next Sun-Moon-Earth syzygy on 24 December 2011 at 18:06.

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