Gibbous ♐ Sagittarius
Moon phase on 17 August 2010 Tuesday 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 58% and growing larger. The 8 days young Moon is in ♐ Sagittarius.
* The exact date and time of this First Quarter phase is on 16 August 2010 at 18:14 UTC.
Moon rises at noon and sets at midnight. It is visible high in the southern sky in early evening.
Moon is passing first ∠4° of ♐ Sagittarius tropical zodiac sector.
Lunar disc appears visually 1.1% narrower than solar disc. Moon and Sun apparent angular diameters are ∠1874" and ∠1895".
Next Full Moon is the Sturgeon Moon of August 2010 after 7 days on 24 August 2010 at 17:05.
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 131 of Meeus index or 1084 from Brown series.
Length of current 131 lunation is 29 days, 7 hours and 22 minutes. This is the year's shortest synodic month of 2010. It is 53 minutes shorter than next lunation 132 length.
Length of current synodic month is 5 hours and 22 minutes shorter than the mean length of synodic month, but it is still 47 minutes longer, compared to 21st century shortest.
This New Moon true anomaly is ∠349.5°. At beginning of next synodic month true anomaly will be ∠4.6°. The length of upcoming synodic months will keep increasing since the true anomaly gets closer to the value of New Moon at point of apogee (∠180°).
6 days after point of perigee on 10 August 2010 at 17:56 in ♌ Leo. The lunar orbit is getting wider, while the Moon is moving outward the Earth. It will keep this direction for the next 7 days, until it get to the point of next apogee on 25 August 2010 at 05:51 in ♓ Pisces.
Moon is 382 525 km (237 690 mi) away from Earth on this date. Moon moves farther next 7 days until apogee, when Earth-Moon distance will reach 406 390 km (252 519 mi).
9 days after its descending node on 7 August 2010 at 17:24 in ♋ Cancer, the Moon is following the southern part of its orbit for the next 3 days, until it will cross the ecliptic from South to North in ascending node on 20 August 2010 at 12:13 in ♑ Capricorn.
24 days after beginning of current draconic month in ♑ Capricorn, the Moon is moving from the second to the final part of it.
11 days after previous North standstill on 6 August 2010 at 02:49 in ♊ Gemini, when Moon has reached northern declination of ∠24.984°. Next day the lunar orbit moves southward to face South declination of ∠-24.929° in the next southern standstill on 18 August 2010 at 17:07 in ♐ Sagittarius.
After 7 days on 24 August 2010 at 17:05 in ♒ Aquarius, the Moon will be in Full Moon geocentric opposition with the Sun and this alignment forms next Sun-Earth-Moon syzygy.