(136199) Eris
ephemeris date magn radius delta ra dec elong phase
Today27 Sep 202218.695.802 AU94.882 AU01h46m-01°05'156.5°0.2°
Opposition17 Oct 202218.695.798 AU94.820 AU01h45m-01°09'168.7°0.1°
(136199) Eris - 2022-09-27
astro.vanbuitenen.nl


 
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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)                : 0.4319709
            a (Semimajor axis)              : 68.1182198
            i (Inclination)                 : 43.79388
            Ω (Longitude of ascending node) : 36.05660
            ω (Argument of perihelion)      : 151.14447
            M (Mean anomaly)                : 208.11105
            Epoch                           : 2022 Aug 09

            L (Longitude of perihelion)     : 14.36675
            B (Latitude of perihelion)      : 19.51131
            P (Orbital period in years)     : 562.21            
        

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. A more printer-friendly version of the same chart can be found below.




Ephemerides:
Date       Time       RA (2000)    DEC (2000)    delta   radius  elong  phase   PA    magn
2022-09-27 00:00 UT   01 46 44.2   -01 05 52    94.882   95.802  156.5    0.2   276   18.6 
2022-09-27 01:49 UT   01 46 44.0   -01 05 52    94.882   95.802  156.5    0.2   276   18.6 
2022-09-28 00:00 UT   01 46 42.1   -01 06 04    94.877   95.802  157.3    0.2   277   18.6 
2022-09-29 00:00 UT   01 46 40.1   -01 06 16    94.871   95.802  158.2    0.2   279   18.6 
2022-09-30 00:00 UT   01 46 38.0   -01 06 29    94.866   95.801  159.0    0.2   280   18.6 
2022-10-01 00:00 UT   01 46 35.9   -01 06 41    94.861   95.801  159.8    0.2   282   18.6 
2022-10-02 00:00 UT   01 46 33.8   -01 06 53    94.856   95.801  160.6    0.2   283   18.6 
2022-10-03 00:00 UT   01 46 31.7   -01 07 05    94.852   95.801  161.4    0.2   285   18.6 
2022-10-04 00:00 UT   01 46 29.5   -01 07 18    94.848   95.801  162.2    0.2   287   18.6 
2022-10-05 00:00 UT   01 46 27.4   -01 07 30    94.844   95.800  162.9    0.2   289   18.6 
2022-10-06 00:00 UT   01 46 25.2   -01 07 42    94.840   95.800  163.7    0.2   292   18.6 
2022-10-07 00:00 UT   01 46 23.1   -01 07 54    94.837   95.800  164.4    0.2   294   18.6 
2022-10-08 00:00 UT   01 46 20.9   -01 08 06    94.834   95.800  165.0    0.2   297   18.6 
2022-10-09 00:00 UT   01 46 18.7   -01 08 17    94.831   95.799  165.7    0.1   300   18.6 
2022-10-10 00:00 UT   01 46 16.5   -01 08 29    94.829   95.799  166.3    0.1   304   18.6 
2022-10-11 00:00 UT   01 46 14.3   -01 08 41    94.827   95.799  166.8    0.1   307   18.6 
2022-10-12 00:00 UT   01 46 12.1   -01 08 52    94.825   95.799  167.3    0.1   311   18.6 
2022-10-13 00:00 UT   01 46 09.9   -01 09 04    94.824   95.799  167.7    0.1   315   18.6 
2022-10-14 00:00 UT   01 46 07.6   -01 09 15    94.822   95.798  168.1    0.1   320   18.6 
2022-10-15 00:00 UT   01 46 05.4   -01 09 27    94.821   95.798  168.3    0.1   324   18.6 
2022-10-16 00:00 UT   01 46 03.2   -01 09 38    94.821   95.798  168.5    0.1   329   18.6 
2022-10-17 00:00 UT   01 46 00.9   -01 09 49    94.820   95.798  168.7    0.1   334   18.6 
2022-10-18 00:00 UT   01 45 58.7   -01 09 60    94.820   95.798  168.7    0.1   339   18.6 
2022-10-19 00:00 UT   01 45 56.4   -01 10 11    94.821   95.797  168.6    0.1   344   18.6 
2022-10-20 00:00 UT   01 45 54.2   -01 10 21    94.821   95.797  168.5    0.1   350   18.6 
2022-10-21 00:00 UT   01 45 51.9   -01 10 32    94.822   95.797  168.3    0.1   354   18.6 
2022-10-22 00:00 UT   01 45 49.6   -01 10 42    94.823   95.797  168.0    0.1   359   18.6 
2022-10-23 00:00 UT   01 45 47.4   -01 10 53    94.824   95.796  167.6    0.1     3   18.6 
2022-10-24 00:00 UT   01 45 45.1   -01 11 03    94.826   95.796  167.1    0.1     8   18.6 
2022-10-25 00:00 UT   01 45 42.9   -01 11 13    94.828   95.796  166.6    0.1    11   18.6 
2022-10-26 00:00 UT   01 45 40.6   -01 11 23    94.830   95.796  166.1    0.1    15   18.6 
2022-10-27 00:00 UT   01 45 38.4   -01 11 32    94.833   95.796  165.5    0.1    18   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.