Mars and 136199 Eris will share the same right ascension, with Mars passing 4°21' to the north of 136199 Eris.

From South El Monte , the pair will be visible between 18:16 and 03:21. They will become accessible at around 18:16, when they rise to an altitude of 21° above your eastern horizon. They will reach their highest point in the sky at 22:48, 62° above your southern horizon. They will become inaccessible at around 03:21 when they sink below 21° above your western horizon.

Mars will be at mag -2.3 in the constellation Aries, and 136199 Eris at mag 18.4 in the neighbouring constellation of Pisces.

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 Mars and 136199 Eris around the time of closest approach is available here.

The positions of the two objects at the moment of conjunction will be as follows:

The coordinates above are given in J2000.0. The pair will be at an angular separation of 169° from the Sun, which is in Libra at this time of year.

The sky on 23 Mar 2026

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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Image credit

The Moon in conjunction with Venus and Jupiter, with the Very Large Telescope in the foreground. Image © Y. Beletsky, ESO, 2009.

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