Jupiter and Mars will share the same right ascension, with Jupiter passing 34' to the north of Mars.
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 2° above the horizon at dawn.
Jupiter will be at mag -1.9, and Mars at mag 1.2, both in the constellation Capricornus.
The pair will be a little too widely separated to fit comfortably 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 Jupiter and Mars 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 |
| Jupiter | 20h49m50s | 18°13'S | Capricornus | -1.9 | 32"0 |
| Mars | 20h49m50s | 18°48'S | Capricornus | 1.2 | 4"0 |
The coordinates above are given in J2000.0. The pair will be at an angular separation of 18° from the Sun, which is in Aquarius at this time of year.
The sky on 12 Sep 2025
| The sky on 12 September 2025 | ||||||||||||||||||||||||||||||||||
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66% 20 days old |
All times shown in PDT.
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Warning
Never attempt to point a pair of binoculars or a telescope at an object close to the Sun. Doing so may result in immediate and permanent blindness.
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.
Related news
| 07 Sep 2008 | – Jupiter ends retrograde motion |
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| 14 Aug 2009 | – Jupiter at opposition |
| 12 Oct 2009 | – Jupiter 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.