Dominic Ford, Editor
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134340 Pluto and 136108 Haumea will share the same right ascension, with 134340 Pluto passing 2°19' to the south of 136108 Haumea.
From South El Monte however, the pair will not be readily observable since they will be very close to the Sun, at a separation of only 21° from it.
134340 Pluto will be at mag 15.1, and 136108 Haumea at mag 17.2, both in the constellation Leo.
The pair will be too widely separated to fit within the field of view of a telescope, but will be visible through a pair of binoculars.
A graph of the angular separation between 134340 Pluto 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 |
| 134340 Pluto | 10h15m00s | 21°49'N | Leo | 15.1 | 0"0 |
| 136108 Haumea | 10h15m00s | 24°09'N | Leo | 17.2 | 0"0 |
The coordinates above are given in J2000.0. The pair will be at an angular separation of 19° from the Sun, which is in Leo at this time of year.
The sky on 12 Sep 2025
| The sky on 12 September 2025 | ||||||||||||||||||||||||||||||||||
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63% 20 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
| 14 Feb 1955 | – 136108 Haumea at opposition |
| 15 Feb 1956 | – 136108 Haumea at opposition |
| 15 Feb 1957 | – 136108 Haumea at opposition |
| 16 Feb 1958 | – 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.