136199 Eris (Dwarf planet)
© NASA/Hubble Space Telescope
From South El Monte , 136199 Eris is visible in the dawn sky, rising at 01:44 (PDT) – 3 hours and 59 minutes before the Sun – and reaching an altitude of 33° above the south-eastern horizon before fading from view as dawn breaks at around 04:32.
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Name
136199 Eris
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Object type
Dwarf planet
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Current position
| Computed for: | 05 July 2026 |
| Right ascension: | 01h49m [1] |
| Declination: | +00°09' [1] |
| Constellation: | Cetus |
| Magnitude: | 18.66 (V) [1] |
| Distance: | 95.69 AU 795.87 lightmin [1] |
Orbital elements [1]
| Semi-major axis: | 67.94 AU |
| Eccentricity: | 0.438217 |
| Inclination: | 43.93° |
| Longitude ascending node: | 36.00° |
| Argument of perihelion: | 150.79° |
| Epoch of elements: | 9 Jun 2026 |
| Mean Anomaly at epoch: | 211.78° |
| Absolute mag (H): | -1.26 [1] |
| Slope parameter (G): | 0.15 [1] |
Derived quantities
| Perihelion: | 38.17 AU |
| Aphelion: | 97.71 AU |
| Orbital period: | 559.96 years |
Source
Events
| 18 Oct 2026 | – 136199 Eris at opposition |
| 15 Apr 2027 | – 136199 Eris at solar conjunction |
| 18 Oct 2027 | – 136199 Eris at opposition |
| 14 Apr 2028 | – 136199 Eris at solar conjunction |
| 18 Oct 2028 | – 136199 Eris at opposition |
| 15 Apr 2029 | – 136199 Eris at solar conjunction |
| 18 Oct 2029 | – 136199 Eris at opposition |
| 15 Apr 2030 | – 136199 Eris at solar conjunction |
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