Waning Gibbous Moon
Waning Gibbous MoonImage credit: NASA/Goddard Space Flight Center Scientific Visualization Studio.(large image)

Waning Gibbous in Gemini

Waning Gibbous on . Illuminated surface of the Moon is 83% and getting smaller. Lunar cycle is 18 days old.

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.

Upcoming main moon phases

Main moon phases of the following lunar cycle.

Moon phase and lunation details

Moon is entering ♊ Gemini

Moon is passing first ∠0° of ♊ Gemini tropical zodiac sector.

4 days after Full Moon

Previous main lunar phase is the Full Moon before 4 days on 30 September 2012 at 03:19.

Harvest Moon before 4 days

Next Full Moon is the Hunter Moon of October 2012 after 25 days on 29 October 2012 at 19:50.

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.

Apparent angular diameter ∠1768"

Lunar disc appears visually 8.2% narrower than solar disc. Moon and Sun apparent angular diameters are ∠1768" and ∠1919".

Lunation 157 / 1110

The Moon is 18 days old and navigating from the middle to the last part of the current synodic month. This is lunation 157 of Meeus index or 1110 from Brown series.

Synodic month length 29.41 days

The length of this lunation is 29 days, 9 hours and 52 minutes and it is 13 minutes shorter than the upcoming lunation's length. This is the year's shortest synodic month of 2012. The lengths of the following synodic months are going to decrease with the lunar orbit 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 2 hours and 52 minutes shorter than the mean synodic month length. It is 3 hours and 17 minutes longer compared to 21st century's shortest synodic month length.

Lunar orbit details for

True anomaly ∠312.9°

The true anomaly of the Moon orbit at the beginning of this lunation cycle is ∠312.9° and at the beginning of the next lunar synodic month the true anomaly is going to be ∠334.3°.

Moon before apogee

15 days since point of perigee on 19 September 2012 at 02:52 in ♏ Scorpio the lunar orbit is getting widen while the Moon is moving away from the Earth. It will keep this direction over the next day until the Moon reaches the point of next apogee on 5 October 2012 at 00:43 in ♊ Gemini.

Distance to Moon 405 481 km

The Moon is 405 481 km (251 954 mi) away from Earth and getting further over the next day until the point apogee when Earth-Moon distance is going to be 405 162 km (251 756 mi).

Moon in descending node

Moon is in descending node in ♉ Taurus at 05:15 crossing the ecliptic from North to South. Lunar position remains south of if for the upcoming 13 days until Moon's next ascending node later on 17 October 2012 at 18:27 in ♏ Scorpio.

Moon before northern standstill

12 days since the last southern standstill on 22 September 2012 at 00:11 in ♐ Sagittarius when the Moon has reached South declination of ∠-21.135° the lunar orbit is extending northward over the next day to face maximum declination of ∠21.024° at the point of next northern standstill on 6 October 2012 at 01:40 in ♊ Gemini.

Draconic month

13 days since the beginning of this draconic month in ♏ Scorpio the Moon is navigating from the second to the final part of the lunar cycle.

Syzygy in 11 days

In 11 days on 15 October 2012 at 12:02 in ♎ Libra the Moon is going to be in a New Moon geocentric conjunction with the Sun and thus forming the next Sun-Moon-Earth syzygy alignment.

Lunar calendar

Sources and credits

Parts of this Lunar Calendar are based on Planetary Ephemeris Data Courtesy of Fred Espenak, www.Astropixels.com

Moon phase image credit to NASA/Goddard Space Flight Center Scientific Visualization Studio, svs.gsfc.nasa.gov