Gibbous ♐ Sagittarius
Moon phase on 15 August 2013 Thursday is First Quarter, 8 days young Moon is in Sagittarius.Share this page: twitter facebook linkedin
First Quarter is the lunar phase on . Seen from Earth, illuminated fraction of the Moon surface is 62% and growing larger. The 8 days young Moon is in ♐ Sagittarius.
* The exact date and time of this First Quarter phase is on 14 August 2013 at 10:56 UTC.
Moon rises at noon and sets at midnight. It is visible high in the southern sky in early evening.
Moon is passing about ∠6° of ♐ Sagittarius tropical zodiac sector.
Lunar disc appears visually 3.3% wider than solar disc. Moon and Sun apparent angular diameters are ∠1959" and ∠1895".
Next Full Moon is the Sturgeon Moon of August 2013 after 5 days on 21 August 2013 at 01:45.
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 8 days young. Earth's natural satellite is moving through the first part of current synodic month. This is lunation 168 of Meeus index or 1121 from Brown series.
Length of current 168 lunation is 29 days, 13 hours and 45 minutes. It is 47 minutes longer than next lunation 169 length.
Length of current synodic month is 1 hour and 1 minute longer than the mean length of synodic month, but it is still 6 hours and 2 minutes shorter, compared to 21st century longest.
This lunation true anomaly is ∠216.9°. At the beginning of next synodic month true anomaly will be ∠249.2°. 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°).
12 days after point of apogee on 3 August 2013 at 08:53 in ♋ Cancer. The lunar orbit is getting closer, while the Moon is moving inward the Earth. It will keep this direction for the next 3 days, until it get to the point of next perigee on 19 August 2013 at 01:26 in ♑ Capricorn.
Moon is 365 910 km (227 366 mi) away from Earth on this date. Moon moves closer next 3 days until perigee, when Earth-Moon distance will reach 362 265 km (225 101 mi).
1 day after its ascending node on 13 August 2013 at 16:20 in ♏ Scorpio, the Moon is following the northern part of its orbit for the next 10 days, until it will cross the ecliptic from North to South in descending node on 26 August 2013 at 08:19 in ♉ Taurus.
1 day after beginning of current draconic month in ♏ Scorpio, the Moon is moving from the beginning to the first part of it.
13 days after previous North standstill on 2 August 2013 at 09:24 in ♊ Gemini, when Moon has reached northern declination of ∠20.025°. Next day the lunar orbit moves southward to face South declination of ∠-19.906° in the next southern standstill on 16 August 2013 at 12:06 in ♐ Sagittarius.
After 5 days on 21 August 2013 at 01:45 in ♒ Aquarius, the Moon will be in Full Moon geocentric opposition with the Sun and this alignment forms next Sun-Earth-Moon syzygy.