The planets Mars and Uranus will make a close approach, passing within a mere 24.5 arcminutes of each other.
From South El Monte however, the pair will not be observable – they will reach their highest point in the sky during daytime and will be no higher than 18° above the horizon at dawn.
Mars will be at mag 1.8; and Uranus will be at mag 5.6. Both objects will lie in the constellation Virgo.
They will be close enough to fit within the field of view of a telescope, but will also 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 | 12h44m50s | 3°39'S | Virgo | 1.8 | 3"9 |
| Uranus | 12h44m10s | 4°01'S | Virgo | 5.6 | 3"6 |
The coordinates above are given in J2000.0. The pair will be at an angular separation of 33° from the Sun, which is in Libra at this time of year.
The sky on 11 Sep 2025
| The sky on 11 September 2025 | ||||||||||||||||||||||||||||||||||
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72% 19 days old |
All times shown in PDT.
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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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| 12 Jun 1970 | – Uranus ends retrograde motion |
| 17 Jan 1971 | – Uranus enters retrograde motion |
| 01 Apr 1971 | – Uranus at opposition |
| 17 Jun 1971 | – 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.