Gibbous ♌ Leo
Moon phase on 21 December 2013 Saturday is Waning Gibbous, 18 days old Moon is in Leo.Share this page: twitter facebook linkedin
Previous main lunar phase is the Full Moon before 4 days on 17 December 2013 at 09:28.
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 about ∠14° of ♌ Leo tropical zodiac sector.
Lunar disc appears visually 9.4% narrower than solar disc. Moon and Sun apparent angular diameters are ∠1775" and ∠1951".
Next Full Moon is the Wolf Moon of January 2014 after 25 days on 16 January 2014 at 04:52.
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 18 days old. Earth's natural satellite is moving from the middle to the last part of current synodic month. This is lunation 172 of Meeus index or 1125 from Brown series.
Length of current 172 lunation is 29 days, 10 hours and 52 minutes. This is the year's shortest synodic month of 2013. It is 28 minutes longer than next lunation 173 length.
Length of current synodic month is 1 hour and 52 minutes shorter than the mean length of synodic month, but it is still 4 hours and 17 minutes longer, compared to 21st century shortest.
This lunation true anomaly is ∠336.4°. At the beginning of next synodic month true anomaly will be ∠353°. 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°).
1 day after point of apogee on 19 December 2013 at 23:49 in ♋ Cancer. The lunar orbit is getting closer, while the Moon is moving inward the Earth. It will keep this direction for the next 11 days, until it get to the point of next perigee on 1 January 2014 at 21:00 in ♑ Capricorn.
Moon is 403 807 km (250 914 mi) away from Earth on this date. Moon moves closer next 11 days until perigee, when Earth-Moon distance will reach 356 922 km (221 781 mi).
8 days after its descending node on 13 December 2013 at 10:10 in ♉ Taurus, the Moon is following the southern part of its orbit for the next 6 days, until it will cross the ecliptic from South to North in ascending node on 28 December 2013 at 00:21 in ♏ Scorpio.
20 days after beginning of current draconic month in ♏ Scorpio, the Moon is moving from the second to the final part of it.
4 days after previous North standstill on 17 December 2013 at 01:00 in ♊ Gemini, when Moon has reached northern declination of ∠19.570°. Next 9 days the lunar orbit moves southward to face South declination of ∠-19.537° in the next southern standstill on 31 December 2013 at 04:49 in ♐ Sagittarius.
After 10 days on 1 January 2014 at 11:14 in ♑ Capricorn, the Moon will be in New Moon geocentric conjunction with the Sun and this alignment forms next Sun-Moon-Earth syzygy.