Dominic Ford, Editor
From the Conjunctions feed
Mars and Uranus will share the same right ascension, with Mars passing 0°37' to the north of Uranus.
From Cambridge, the pair will become visible around 18:11 (EDT) as the dusk sky fades, 31° above your western horizon. They will then sink towards the horizon, setting 3 hours and 40 minutes after the Sun at 21:07.
Mars will be at mag 1.3, and Uranus at mag 5.9, both in the constellation Pisces.
The pair will be a little too widely separated to fit comfortably within the field of view of a telescope, but will be visible through a pair of binoculars.
A graph of the angular separation between Mars and Uranus 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 43° from the Sun, which is in Aquarius at this time of year.
|The sky on 27 February 2017|
1 day 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.
|15 Oct 2016||– Uranus at opposition|
|19 Oct 2017||– Uranus at opposition|
|23 Oct 2018||– Uranus at opposition|
|28 Oct 2019||– Uranus at opposition|
The Moon in conjunction with Venus and Jupiter, with the Very Large Telescope in the foreground. Image © Y. Beletsky, ESO, 2009.