Dominic Ford, Editor
From the Appulses feed
The Moon, Jupiter and Mars will make a close approach, passing within 4°40' of each other. The Moon will be 24 days old.
The Moon will be at mag -11.1; Jupiter will be at mag -1.9; and Mars will be at mag 1.4. The trio will lie in the constellation Libra.
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 60° from the Sun, which is in Sagittarius at this time of year.
|The sky on 11 January 2018|
24 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 Oct 2017||– Mars at aphelion|
|27 Jul 2018||– Mars at opposition|
|31 Jul 2018||– Mars at perigee|
|16 Sep 2018||– Mars at perihelion|