Mars and 136199 Eris will share the same right ascension, with Mars passing 9°56' to the north of 136199 Eris.
From Fairfield , the pair will become visible at around 18:08 (EST), 49° above your southern horizon, as dusk fades to darkness. They will then sink towards the horizon, setting at 23:31.
Mars will be at mag 0.5 in the constellation Aries, and 136199 Eris at mag 18.6 in the neighbouring constellation of Cetus.
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:
| Object | Right Ascension | Declination | Constellation | Magnitude | Angular Size |
| Mars | 01h50m20s | 12°12'N | Aries | 0.5 | 7"3 |
| 136199 Eris | 01h50m20s | 2°16'N | Cetus | 18.6 | 0"0 |
The coordinates above are given in J2000.0. The pair will be at an angular separation of 83° from the Sun, which is in Capricornus at this time of year.
The sky on 23 Nov 2024
| The sky on 23 November 2024 | ||||||||||||||||||||||||||||||||||
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42% 22 days old |
All times shown in EST.
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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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Image credit
The Moon in conjunction with Venus and Jupiter, with the Very Large Telescope in the foreground. Image © Y. Beletsky, ESO, 2009.