Gibbous ♑ Capricorn
Moon phase on 17 September 2018 Monday is First Quarter, 8 days young Moon is in Capricorn.Share this page: twitter facebook linkedin
First Quarter is the lunar phase on . Seen from Earth, illuminated fraction of the Moon surface is 55% and growing larger. The 8 days young Moon is in ♑ Capricorn.
* The exact date and time of this First Quarter phase is on 16 September 2018 at 23:15 UTC.
Moon rises at noon and sets at midnight. It is visible high in the southern sky in early evening.
Moon is passing first ∠0° of ♑ Capricorn tropical zodiac sector.
Lunar disc appears visually 6.7% narrower than solar disc. Moon and Sun apparent angular diameters are ∠1785" and ∠1909".
Next Full Moon is the Harvest Moon of September 2018 after 7 days on 25 September 2018 at 02:53.
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 231 of Meeus index or 1184 from Brown series.
Length of current 231 lunation is 29 days, 9 hours and 45 minutes. It is 2 hours and 30 minutes shorter than next lunation 232 length.
Length of current synodic month is 2 hours and 59 minutes shorter than the mean length of synodic month, but it is still 3 hours and 10 minutes longer, compared to 21st century shortest.
This New Moon true anomaly is ∠28°. At beginning of next synodic month true anomaly will be ∠49.6°. 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°).
9 days after point of perigee on 8 September 2018 at 01:21 in ♌ Leo. The lunar orbit is getting wider, while the Moon is moving outward the Earth. It will keep this direction for the next 2 days, until it get to the point of next apogee on 20 September 2018 at 00:54 in ♒ Aquarius.
Moon is 401 590 km (249 536 mi) away from Earth on this date. Moon moves farther next 2 days until apogee, when Earth-Moon distance will reach 404 875 km (251 578 mi).
10 days after its ascending node on 6 September 2018 at 22:42 in ♋ Cancer, the Moon is following the northern part of its orbit for the next 2 days, until it will cross the ecliptic from North to South in descending node on 20 September 2018 at 09:30 in ♒ Aquarius.
10 days after beginning of current draconic month in ♋ Cancer, the Moon is moving from the beginning to the first part of it.
12 days after previous North standstill on 5 September 2018 at 06:56 in ♋ Cancer, when Moon has reached northern declination of ∠20.837°. Next day the lunar orbit moves southward to face South declination of ∠-20.909° in the next southern standstill on 18 September 2018 at 09:35 in ♑ Capricorn.
After 7 days on 25 September 2018 at 02:53 in ♈ Aries, the Moon will be in Full Moon geocentric opposition with the Sun and this alignment forms next Sun-Earth-Moon syzygy.