Mars and Uranus will share the same right ascension, with Mars passing 59' to the north of Uranus.
At around the same time, the two objects will also make a close approach, technically called an appulse.
From South El Monte , the pair will be visible in the dawn sky, rising at 00:12 (PST) and reaching an altitude of 69° above the south-eastern horizon before fading from view as dawn breaks at around 06:08.
Mars will be at mag 0.6, and Uranus at mag 5.5, both in the constellation Cancer.
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 |
| Mars | 08h58m40s | 18°46'N | Cancer | 0.6 | 7"3 |
| Uranus | 08h58m40s | 17°47'N | Cancer | 5.5 | 3"8 |
The coordinates above are given in J2000.0. The pair will be at an angular separation of 87° from the Sun, which is in Libra at this time of year.
The sky on 23 Dec 2025
| The sky on 23 December 2025 | ||||||||||||||||||||||||||||||||||
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16% 4 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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Image credit
The Moon in conjunction with Venus and Jupiter, with the Very Large Telescope in the foreground. Image © Y. Beletsky, ESO, 2009.