The planets Mars and Uranus will make a close approach, passing within a mere 34.5 arcminutes of each other.
From South El Monte , the pair will become visible at around 21:20 (PST), 27° above your western horizon, as dusk fades to darkness. They will then sink towards the horizon, setting 3 hours and 30 minutes after the Sun at 23:38.
Mars will be at mag 1.5; and Uranus will be at mag 5.5. Both objects will lie in the constellation Leo.
They 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.
At around the same time, the pair will also share the same right ascension – called a conjunction.
A graph of the angular separation between Mars and Uranus around the time of closest approach is available here.
The positions of the pair at the moment of closest approach will be as follows:
| Object | Right Ascension | Declination | Constellation | Magnitude | Angular Size |
| Mars | 09h43m50s | 15°00'N | Leo | 1.5 | 4"7 |
| Uranus | 09h43m00s | 14°27'N | Leo | 5.5 | 3"7 |
The coordinates above are given in J2000.0. The pair will be at an angular separation of 57° from the Sun, which is in Taurus at this time of year.
The sky on 27 Dec 2025
| The sky on 27 December 2025 | ||||||||||||||||||||||||||||||||||
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62% 8 days old |
All times shown in PST.
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Source
The circumstances of this event were computed using the DE430 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.
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| 17 Feb 1962 | – Uranus at opposition |
| 04 May 1962 | – Uranus ends retrograde motion |
Image credit
The Moon in conjunction with Venus and Jupiter, with the Very Large Telescope in the foreground. Image © Y. Beletsky, ESO, 2009.