1 Ceres and 134340 Pluto will share the same right ascension, with 1 Ceres passing 7°17' to the north of 134340 Pluto.
From South El Monte , the pair will become visible at around 20:43 (PDT), 31° above your western horizon, as dusk fades to darkness. They will then sink towards the horizon, setting 3 hours and 49 minutes after the Sun at 23:25.
1 Ceres will be at mag 8.8, and 134340 Pluto at mag 15.8, both in the constellation Gemini.
A graph of the angular separation between 1 Ceres and 134340 Pluto 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 |
| 1 Ceres | 07h04m20s | 28°36'N | Gemini | 8.8 | 0"0 |
| 134340 Pluto | 07h04m20s | 21°18'N | Gemini | 15.8 | 0"0 |
The coordinates above are given in J2000.0. The pair will be at an angular separation of 51° from the Sun, which is in Aries at this time of year.
The sky on 12 Aug 2026
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All times shown in PDT.
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Source
The circumstances of this event were computed using the DE440 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.