Waxing Gibbous on

Moon phase on 17 September 2013 Tuesday is Waxing Gibbous, 12 days young Moon is in Aquarius.

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Moon phase details for

Lunar calendar 2013 | September 2013

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

Waxing Gibbous 95% illuminated

Waxing Gibbous is the lunar phase on . Seen from Earth, illuminated fraction of the Moon surface is 95% and growing larger.

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Moon phase and lunation

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.

4 days after First Quarter

Previous main lunar phase is the First Quarter before 4 days on 12 September 2013 at 17:08.

Harvest Moon after 1 day

Next Full Moon is the Harvest Moon of September after 1 day on 19 September 2013 at 11:13.

Moon in Aquarius

Moon is leaving the last ∠2° of Aquarius tropical zodiac sector and enters Pisces later.

Upcoming Moon phases

Apparent angular diameter ∠1939"

Lunar disc appears visually 1.53% wider than solar disc. Moon and Sun apparent angular diameters are ∠1939" and ∠1909".

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 169 / 1122

Moon is 12 days young. Earth's natural satellite is moving from the first to the middle part of current synodic month. This is lunation 169 of Meeus index or 1122 from Brown series.

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Synodic month length 29.54 days

Length of current 169 lunation is 29 days, 12 hours and 58 minutes. It is 43 minutes longer than next lunation 170.

Lunation length longer than mean

Length of current synodic month is 14 minutes longer than the mean length of synodic month, but it is still 6 hours and 49 minutes shorter, compared to 21st century longest.

Lunar orbit position on

True anomaly ∠249.2°

This lunation true anomaly is ∠249.2°. At the beginning of next synodic month true anomaly is ∠285.3°. The length of upcoming synodic months decreases since the true anomaly gets closer to the value of New Moon at point of perigee (∠0°or∠360°).

Moon after perigee

1 day after point of perigee on 15 September 2013 at 16:34, lunar orbit gets wider while the Moon moves outward the Earth. It keeps this direction for next 10 days until it gets to the point of apogee on 27 September 2013 at 18:17.

Distance to Moon 369 683 km

Moon is 369 683 km (229 711 mi) away from Earth on this date. At previous perigee point before 1 day, distance is 367 388 km (228 284 mi). Moon moves farther next 10 days until apogee, when Earth-Moon distance reaches 404 309 km (251 226 mi).

Moon before descending node

7 days after its ascending node on 9 September 2013 at 17:29, the Moon follows the northern part of its orbit for the next 5 days untill it crosses the ecliptic from North to South in descending node on 22 September 2013 at 13:48.

Draconic month

7 days after its beginning, the Moon is moving from the beginning to the first part of current draconic month.

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Moon after southern standstill

4 days after previous South standstill on 12 September 2013 at 18:30, when Moon reaches southern declination of ∠-19.685°, lunar orbit moves northward for the next 8 days to face North declination of ∠19.599° in the next northern standstill on 26 September 2013 at 01:03.

Syzygy in 1 day

After 1 day the Moon is in Full Moon opposition with the Sun and this alignment forms next Sun-Earth-Moon syzygy on 19 September 2013 at 11:13.

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