Mars and 1 Ceres will share the same right ascension, with Mars passing 7°31' to the north of 1 Ceres.
From South El Monte , the pair will become visible at around 17:54 (PDT), 26° above your southern horizon, as dusk fades to darkness. They will then sink towards the horizon, setting at 21:38.
Mars will be at mag 0.4 in the constellation Capricornus, and 1 Ceres at mag 9.1 in the neighbouring constellation of Microscopium.
A graph of the angular separation between Mars and 1 Ceres 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 | 20h35m00s | 20°31'S | Capricornus | 0.4 | 7"5 |
| 1 Ceres | 20h35m00s | 28°02'S | Microscopium | 9.1 | 0"0 |
The coordinates above are given in J2000.0. The pair will be at an angular separation of 75° from the Sun, which is in Libra at this time of year.
The sky on 9 Sep 2025
| The sky on 9 September 2025 | ||||||||||||||||||||||||||||||||||
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90% 17 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.
Related news
| 24 Jul 1969 | – 1 Ceres at opposition |
| 21 Oct 1970 | – 1 Ceres at opposition |
| 31 Jan 1972 | – 1 Ceres at opposition |
| 28 May 1973 | – 1 Ceres at opposition |
Image credit
The Moon in conjunction with Venus and Jupiter, with the Very Large Telescope in the foreground. Image © Y. Beletsky, ESO, 2009.