1 Ceres and 136108 Haumea will share the same right ascension, with 1 Ceres passing 5°21' to the south of 136108 Haumea.
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 21° above the horizon at dawn.
1 Ceres will be at mag 8.7, and 136108 Haumea at mag 17.2, both in the constellation Leo.
A graph of the angular separation between 1 Ceres and 136108 Haumea 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 | 10h08m10s | 18°35'N | Leo | 8.7 | 0"0 |
| 136108 Haumea | 10h08m10s | 23°56'N | Leo | 17.2 | 0"0 |
The coordinates above are given in J2000.0. The pair will be at an angular separation of 32° from the Sun, which is in Virgo 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.
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| 15 Feb 1956 | – 136108 Haumea 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.