This happens at around the time when the Moon's orbit carries it between the Sun and the Earth, at around the same time that it passes new moon.
This distance between the Earth and Moon will be 0.0027 AU (406,000 km).
The exact positions of the Sun and Moon in the sky will be:
|Object||Right Ascension||Declination||Constellation||Angular Size|
The coordinates above are given in J2000.0.
|The sky on 18 December 2017|
30 days old
All times shown in EST.
Never attempt to point a pair of binoculars or a telescope at an object close to the Sun. Doing so may result in immediate and permanent blindness.
The circumstances of this event were computed using the DE405 planetary ephemeris published by the Jet Propulsion Laboratory (JPL).
This event was automatically generated by searching the ephemeris for planetary alignments which are of interest to amateur astronomers, and the text above was generated based on an estimate of your location.
|18 Dec 2017||– The Moon at perihelion|
|26 Dec 2017||– Moon at First Quarter|
|01 Jan 2018||– The Moon at perigee|
|01 Jan 2018||– The Moon at aphelion|