Dominic Ford, Editor
From the Appulses feed
The Moon, Jupiter and Saturn will make a close approach, passing within 2°53' of each other. The Moon will be 3 days old.
From Cambridge, the trio will be difficult to observe as they will appear no higher than 18° above the horizon. They will become visible around 16:30 (EST) as the dusk sky fades, 18° above your south-western horizon. They will then sink towards the horizon, setting 2 hours and 37 minutes after the Sun at 18:46.
They 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 trio at the moment of closest approach will be as follows:
|Object||Right Ascension||Declination||Constellation||Magnitude||Angular Size|
The coordinates above are given in J2000.0. The trio will be at an angular separation of 33° from the Sun, which is in Ophiuchus at this time of year.
|The sky on 17 December 2020|
3 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.
|14 Jul 2020||– Jupiter at opposition|
|28 Jan 2021||– Jupiter at solar conjunction|
|19 Aug 2021||– Jupiter at opposition|
|05 Mar 2022||– Jupiter at solar conjunction|