(136199) Eris
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Opposition	18 Oct 2026	18.6	95.454 AU	94.474 AU	01h48m	-00°06'	169.5°	0.1°
Today	10 Nov 2026	18.6	95.448 AU	94.547 AU	01h47m	-00°09'	155.4°	0.2°

The interactive orbit chart above shows the body's path through the solar system and its position at the given date. Green and blue lines are shown perpendicular to the ecliptic plane: Green if the path is above the ecliptic plane, blue if it is below. (Left-click and drag to rotate the view; Right-click and drag to move the view; Use scroll wheel to zoom in our out.)

The orbital elements of Eris are:

            e (Eccentricity)                : 0.4382371
            a (Semimajor axis)              : 67.9348561
            i (Inclination)                 : 43.92597
            Ω (Longitude of ascending node) : 36.00470
            ω (Argument of perihelion)      : 150.79139
            M (Mean anomaly)                : 211.78227
            Epoch                           : 2026 Jun 09

            L (Longitude of perihelion)     : 14.07159
            B (Latitude of perihelion)      : 19.78753
            P (Orbital period in years)     : 559.94            
        

The light curve chart below shows the estimated development of the minor planet's magnitude.

The all-sky chart below shows the path of the minor planet over the same period as the light curve. The current position is marked yellow.

The following chart shows the path of the minor planet in the next few days. The field of view is optimized for (~10x50) binoculars and finderscopes.

Ephemerides:

Date       Time       RA (2000)    DEC (2000)    delta   radius  elong  phase   PA    magn
2026-11-10 00:00 UT   01 47 12.1   +00 09 53    94.547   95.448  155.4    0.2    45   18.6 
2026-11-10 21:20 UT   01 47 10.2   +00 09 59    94.553   95.448  154.5    0.3    46   18.6 
2026-11-11 00:00 UT   01 47 09.9   +00 10 00    94.554   95.448  154.4    0.3    46   18.6 
2026-11-12 00:00 UT   01 47 07.8   +00 10 07    94.560   95.448  153.5    0.3    47   18.6 
2026-11-13 00:00 UT   01 47 05.7   +00 10 14    94.568   95.447  152.6    0.3    48   18.6 
2026-11-14 00:00 UT   01 47 03.6   +00 10 21    94.575   95.447  151.7    0.3    49   18.6 
2026-11-15 00:00 UT   01 47 01.5   +00 10 27    94.583   95.447  150.7    0.3    50   18.6 
2026-11-16 00:00 UT   01 46 59.5   +00 10 34    94.591   95.447  149.8    0.3    50   18.6 
2026-11-17 00:00 UT   01 46 57.4   +00 10 40    94.599   95.446  148.8    0.3    51   18.6 
2026-11-18 00:00 UT   01 46 55.4   +00 10 46    94.607   95.446  147.9    0.3    52   18.6 
2026-11-19 00:00 UT   01 46 53.4   +00 10 51    94.616   95.446  146.9    0.3    52   18.6 
2026-11-20 00:00 UT   01 46 51.4   +00 10 57    94.625   95.446  146.0    0.3    53   18.6 
2026-11-21 00:00 UT   01 46 49.4   +00 11 02    94.634   95.445  145.0    0.3    54   18.6 
2026-11-22 00:00 UT   01 46 47.5   +00 11 07    94.644   95.445  144.0    0.3    54   18.6 
2026-11-23 00:00 UT   01 46 45.5   +00 11 12    94.654   95.445  143.1    0.4    55   18.6 
2026-11-24 00:00 UT   01 46 43.6   +00 11 16    94.664   95.445  142.1    0.4    55   18.6 
2026-11-25 00:00 UT   01 46 41.8   +00 11 21    94.674   95.444  141.1    0.4    56   18.6 
2026-11-26 00:00 UT   01 46 39.9   +00 11 25    94.684   95.444  140.1    0.4    56   18.6 
2026-11-27 00:00 UT   01 46 38.1   +00 11 28    94.695   95.444  139.2    0.4    56   18.6 
2026-11-28 00:00 UT   01 46 36.3   +00 11 32    94.706   95.444  138.2    0.4    57   18.6 
2026-11-29 00:00 UT   01 46 34.5   +00 11 35    94.717   95.443  137.2    0.4    57   18.6 
2026-11-30 00:00 UT   01 46 32.7   +00 11 38    94.729   95.443  136.2    0.4    58   18.6 
2026-12-01 00:00 UT   01 46 31.0   +00 11 41    94.740   95.443  135.2    0.4    58   18.6 
2026-12-02 00:00 UT   01 46 29.3   +00 11 44    94.752   95.443  134.2    0.4    58   18.6 
2026-12-03 00:00 UT   01 46 27.6   +00 11 46    94.764   95.442  133.3    0.4    59   18.6 
2026-12-04 00:00 UT   01 46 25.9   +00 11 48    94.776   95.442  132.3    0.4    59   18.6 
2026-12-05 00:00 UT   01 46 24.3   +00 11 50    94.789   95.442  131.3    0.4    59   18.6 
2026-12-06 00:00 UT   01 46 22.7   +00 11 52    94.802   95.442  130.3    0.5    60   18.6 
2026-12-07 00:00 UT   01 46 21.2   +00 11 53    94.814   95.441  129.3    0.5    60   18.6 
2026-12-08 00:00 UT   01 46 19.6   +00 11 54    94.827   95.441  128.3    0.5    60   18.6 
2026-12-09 00:00 UT   01 46 18.1   +00 11 55    94.841   95.441  127.3    0.5    61   18.6 
2026-12-10 00:00 UT   01 46 16.7   +00 11 56    94.854   95.441  126.3    0.5    61   18.6 

    Terminology:
            
    delta:  distance between minor planet and earth in AU
    radius: distance between minor planet and sun in AU
    magn:   magnitude (brightness) estimate    
    ra:     right ascension in hours (24h = 360deg)
    dec:    declination in degrees
    elong:  elongation in degrees (angle sun-earth-minor planet)    
    phase:  phase angle in degrees (angle sun-minor planet-earth)        
    AU:     Astronomical Unit (mean distance between earth and sun: 149597870.7 km
    

Orbital elements provided by the MPC (Minor Planet Center).
Calculations by a modified version of AAPlus, a C# implementation of the AA+ project by PJ Naughter from the algorithms presented in the book "Astronomical Algorithms" by Jean Meeus.
NGC2000 dso catalog and star labels from VizieR as provided by the Strasbourg astronomical Data Center.
Tycho2 catalog from the ESO archive.