Dominic Ford, Editor
From the Appulses feed
The Moon and Jupiter will make a close approach, passing within 3°04' of each other. The Moon will be 27 days old.
From Cambridge, the pair will be difficult to observe as they will appear no higher than 15° above the horizon. They will be visible in the dawn sky, rising at 04:56 (EDT) – 2 hours and 17 minutes before the Sun – and reaching an altitude of 15° above the south-eastern horizon before fading from view as dawn breaks around 06:51.
The Moon will be at mag -9.7, and Jupiter at mag -1.8, both in the constellation Ophiuchus.
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 closest approach 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 30° from the Sun, which is in Sagittarius at this time of year.
|The sky on 03 January 2019|
27 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.
|08 May 2018||– Jupiter at opposition|
|10 Jun 2019||– Jupiter at opposition|
|14 Jul 2020||– Jupiter at opposition|
|19 Aug 2021||– Jupiter at opposition|
The Moon in conjunction with Venus and Jupiter, with the Very Large Telescope in the foreground. Image © Y. Beletsky, ESO, 2009.