Gibbous ♊ Gemini
Moon phase on 18 September 2011 Sunday is Waning Gibbous, 20 days old Moon is in Gemini.Share this page: twitter facebook linkedin
Previous main lunar phase is the Full Moon before 6 days on 12 September 2011 at 09:27.
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.
Moon is passing first ∠2° of ♊ Gemini tropical zodiac sector.
Lunar disc appears visually 6.3% narrower than solar disc. Moon and Sun apparent angular diameters are ∠1794" and ∠1910".
Next Full Moon is the Hunter Moon of October 2011 after 23 days on 12 October 2011 at 02:06.
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.
The Moon is 20 days old. Earth's natural satellite is moving from the middle to the last part of current synodic month. This is lunation 144 of Meeus index or 1097 from Brown series.
Length of current 144 lunation is 29 days, 8 hours and 5 minutes. This is the year's shortest synodic month of 2011. It is 42 minutes shorter than next lunation 145 length.
Length of current synodic month is 4 hours and 39 minutes shorter than the mean length of synodic month, but it is still 1 hour and 30 minutes longer, compared to 21st century shortest.
This lunation true anomaly is ∠333.4°. At the beginning of next synodic month true anomaly will be ∠350.1°. The length of upcoming synodic months will keep decreasing since the true anomaly gets closer to the value of New Moon at point of perigee (∠0° or ∠360°).
3 days after point of apogee on 15 September 2011 at 06:23 in ♈ Aries. The lunar orbit is getting closer, while the Moon is moving inward the Earth. It will keep this direction for the next 9 days, until it get to the point of next perigee on 28 September 2011 at 01:01 in ♎ Libra.
Moon is 399 617 km (248 310 mi) away from Earth on this date. Moon moves closer next 9 days until perigee, when Earth-Moon distance will reach 357 556 km (222 175 mi).
13 days after its ascending node on 5 September 2011 at 07:36 in ♐ Sagittarius, the Moon is following the northern part of its orbit for the next day, until it will cross the ecliptic from North to South in descending node on 19 September 2011 at 19:38 in ♊ Gemini.
13 days after beginning of current draconic month in ♐ Sagittarius, the Moon is moving from the beginning to the first part of it.
13 days after previous South standstill on 5 September 2011 at 05:01 in ♐ Sagittarius, when Moon has reached southern declination of ∠-23.047°. Next day the lunar orbit moves northward to face North declination of ∠22.890° in the next northern standstill on 19 September 2011 at 20:05 in ♊ Gemini.
After 8 days on 27 September 2011 at 11:09 in ♎ Libra, the Moon will be in New Moon geocentric conjunction with the Sun and this alignment forms next Sun-Moon-Earth syzygy.