Dominic Ford, Editor
From the Conjunctions feed
The Moon and Jupiter will share the same right ascension, with the Moon passing 4°14' to the north of Jupiter. The Moon will be 26 days old.
From Cambridge, the pair will be visible in the dawn sky, rising at 03:49 (EDT) – 3 hours and 17 minutes before the Sun – and reaching an altitude of 24° above the south-eastern horizon before fading from view as dawn breaks around 06:44.
The Moon will be at mag -10.3, and Jupiter at mag -1.8, both in the constellation Libra.
The pair will be too widely separated to fit within the field of view of a telescope, but will be visible to the naked eye or through a pair of binoculars.
A graph of the angular separation between the Moon and Jupiter around the time of closest approach is available here.
The positions of the two objects at the moment of conjunction will be as follows:
|Object||Right Ascension||Declination||Constellation||Magnitude||Angular Size|
The coordinates above are given in J2000.0. The pair will be at an angular separation of 40° from the Sun, which is in Ophiuchus at this time of year.
|The sky on 14 December 2017|
26 days old
All times shown in EST.
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.
|07 Apr 2017||– Jupiter at opposition|
|08 May 2018||– Jupiter at opposition|
|10 Jun 2019||– Jupiter at opposition|
|14 Jul 2020||– Jupiter at opposition|
The Moon in conjunction with Venus and Jupiter, with the Very Large Telescope in the foreground. Image © Y. Beletsky, ESO, 2009.