Quarter ♉ Taurus
First Quarter is the lunar phase on . Seen from Earth, illuminated fraction of the Moon surface is 45% and growing larger. The 7 days young Moon is in ♈ Aries.
* The exact date and time of this First Quarter phase is on 18 January 2013 at 23:45 UTC.
Moon rises at noon and sets at midnight. It is visible high in the southern sky in early evening.
Moon is passing about ∠23° of ♈ Aries tropical zodiac sector.
Lunar disc appears visually 7.7% narrower than solar disc. Moon and Sun apparent angular diameters are ∠1806" and ∠1950".
Next Full Moon is the Wolf Moon of January 2013 after 8 days on 27 January 2013 at 04:38.
There is medium ocean tide on this date. Sun and Moon gravitational forces are not aligned, but meet at very acute angle, so their combined tidal force is moderate.
The Moon is 7 days young. Earth's natural satellite is moving through the first part of current synodic month. This is lunation 161 of Meeus index or 1114 from Brown series.
Length of current 161 lunation is 29 days, 11 hours and 36 minutes. It is 55 minutes shorter than next lunation 162 length.
Length of current synodic month is 1 hour and 8 minutes shorter than the mean length of synodic month, but it is still 5 hours and 1 minute longer, compared to 21st century shortest.
This New Moon true anomaly is ∠23.3°. At beginning of next synodic month true anomaly will be ∠44.2°. 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°).
8 days after point of perigee on 10 January 2013 at 10:26 in ♑ Capricorn. The lunar orbit is getting wider, while the Moon is moving outward the Earth. It will keep this direction for the next 3 days, until it get to the point of next apogee on 22 January 2013 at 10:52 in ♊ Gemini.
Moon is 396 816 km (246 570 mi) away from Earth on this date. Moon moves farther next 3 days until apogee, when Earth-Moon distance will reach 405 313 km (251 850 mi).
10 days after its ascending node on 7 January 2013 at 23:50 in ♏ Scorpio, 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 21 January 2013 at 01:19 in ♉ Taurus.
10 days after beginning of current draconic month in ♏ Scorpio, the Moon is moving from the beginning to the first part of it.
8 days after previous South standstill on 9 January 2013 at 15:22 in ♐ Sagittarius, when Moon has reached southern declination of ∠-20.879°. Next 4 days the lunar orbit moves northward to face North declination of ∠20.816° in the next northern standstill on 23 January 2013 at 05:12 in ♊ Gemini.
After 8 days on 27 January 2013 at 04:38 in ♌ Leo, the Moon will be in Full Moon geocentric opposition with the Sun and this alignment forms next Sun-Earth-Moon syzygy.