Waning Gibbous on

Moon phase on 16 October 2011 Sunday is Waning Gibbous, 18 days old Moon is in Gemini.

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Moon phase for

Lunar calendar 2011 | October 2011

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

Waning Gibbous 83% illuminated

Waning Gibbous is the lunar phase on . Seen from Earth, illuminated fraction of the Moon surface is 83% and getting smaller. The Moon is in ♊ Gemini.

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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.

4 days after Full Moon

Previous main lunar phase is the Full Moon before 4 days on 12 October 2011 at 02:06.

Moon in ♊ Gemini

Moon is passing about ∠11° of ♊ Gemini tropical zodiac sector.

Upcoming main Moon phases

Hunter Moon before 4 days

Next Full Moon is the Beaver Moon of November after 25 days on 10 November 2011 at 20:16.

Apparent angular diameter ∠1801"

Lunar disc appears visually 6.67% narrower than solar disc. Moon and Sun apparent angular diameters are ∠1801" and ∠1925".

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 145 / 1098

Moon is 18 days old. Earth's natural satellite is moving from the middle to the last part of current synodic month. This is lunation 145 of Meeus index or 1098 from Brown series.

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Synodic month length 29.37 days

Length of current 145 lunation is 29 days, 8 hours and 47 minutes. It is 1 hour and 27 minutes shorter than next lunation 146.

Lunation length shorter than mean

Length of current synodic month is 3 hours and 57 minutes shorter than the mean length of synodic month, but it is still 2 hours and 12 minutes longer, compared to 21st century shortest.

Lunar orbit position on

True anomaly ∠350.1°

This lunation true anomaly is ∠350.1°. At the beginning of next synodic month true anomaly is ∠5.3°. 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

4 days after point of apogee on 12 October 2011 at 11:43, lunar orbit gets closer while the Moon moves inward the Earth. It keeps this direction for next 10 days until it gets to the point of perigee on 26 October 2011 at 12:26.

Distance to Moon 398 045 km

Moon is 398 045 km (247 334 mi) away from Earth on this date. At previous apogee point before 4 days, distance is 406 435 km (252 547 mi). Moon moves closer next 10 days until perigee, when Earth-Moon distance reaches 357 051 km (221 861 mi).

Moon in descending node

Moon is in descending node at 21:01 on this date, it crosses the ecliptic from South to North. Moon follows the southern part of its orbit for the next 13 days to meet ascending node on 29 October 2011 at 14:59.

Draconic month

14 days after its beginning, the Moon is moving through the middle part of current draconic month.

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Moon before northern standstill

14 days after previous South standstill on 2 October 2011 at 11:38, when Moon reaches southern declination of ∠-22.791°, lunar orbit moves northward for the next 1 day to face North declination of ∠22.665° in the next northern standstill on 17 October 2011 at 02:06.

Syzygy in 10 days

After 10 days the Moon is in New Moon conjunction with the Sun and this alignment forms next Sun-Moon-Earth syzygy on 26 October 2011 at 19:56.

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