(136199) Eris
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Today	27 Jul 2024	18.7	95.651 AU	95.490 AU	01h48m	-00°23'	98.8°	0.6°
Opposition	17 Oct 2024	18.6	95.631 AU	94.653 AU	01h47m	-00°38'	169.1°	0.1°

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)                : 0.4332269
            a (Semimajor axis)              : 68.1359162
            i (Inclination)                 : 43.75456
            Ω (Longitude of ascending node) : 36.07322
            ω (Argument of perihelion)      : 150.77501
            M (Mean anomaly)                : 210.01465
            Epoch                           : 2024 Mar 31

            L (Longitude of perihelion)     : 14.06967
            B (Latitude of perihelion)      : 19.73392
            P (Orbital period in years)     : 562.42            
        

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
2024-07-27 00:00 UT   01 48 59.7   +00 23 31    95.490   95.651   98.8    0.6   251   18.7 
2024-07-27 03:25 UT   01 48 59.7   +00 23 32    95.487   95.651   99.0    0.6   251   18.7 
2024-07-28 00:00 UT   01 48 59.6   +00 23 37    95.473   95.650   99.8    0.6   251   18.7 
2024-07-29 00:00 UT   01 48 59.4   +00 23 43    95.457   95.650  100.7    0.6   251   18.7 
2024-07-30 00:00 UT   01 48 59.2   +00 23 50    95.440   95.650  101.6    0.6   251   18.7 
2024-07-31 00:00 UT   01 48 58.9   +00 23 56    95.424   95.650  102.6    0.6   251   18.7 
2024-08-01 00:00 UT   01 48 58.6   +00 24 03    95.407   95.649  103.5    0.6   252   18.7 
2024-08-02 00:00 UT   01 48 58.3   +00 24 10    95.391   95.649  104.5    0.6   252   18.7 
2024-08-03 00:00 UT   01 48 57.9   +00 24 17    95.375   95.649  105.4    0.6   252   18.7 
2024-08-04 00:00 UT   01 48 57.5   +00 24 24    95.358   95.649  106.3    0.6   252   18.7 
2024-08-05 00:00 UT   01 48 57.1   +00 24 32    95.342   95.648  107.3    0.6   252   18.7 
2024-08-06 00:00 UT   01 48 56.6   +00 24 40    95.326   95.648  108.2    0.6   253   18.7 
2024-08-07 00:00 UT   01 48 56.1   +00 24 48    95.310   95.648  109.2    0.6   253   18.7 
2024-08-08 00:00 UT   01 48 55.5   +00 24 56    95.295   95.648  110.1    0.6   253   18.7 
2024-08-09 00:00 UT   01 48 54.9   +00 25 04    95.279   95.648  111.0    0.6   253   18.7 
2024-08-10 00:00 UT   01 48 54.3   +00 25 12    95.263   95.647  112.0    0.6   253   18.7 
2024-08-11 00:00 UT   01 48 53.6   +00 25 21    95.248   95.647  112.9    0.6   254   18.7 
2024-08-12 00:00 UT   01 48 52.9   +00 25 30    95.232   95.647  113.9    0.6   254   18.7 
2024-08-13 00:00 UT   01 48 52.1   +00 25 39    95.217   95.647  114.8    0.6   254   18.7 
2024-08-14 00:00 UT   01 48 51.4   +00 25 48    95.202   95.646  115.8    0.5   254   18.7 
2024-08-15 00:00 UT   01 48 50.5   +00 25 57    95.187   95.646  116.7    0.5   254   18.7 
2024-08-16 00:00 UT   01 48 49.7   +00 26 06    95.172   95.646  117.6    0.5   255   18.7 
2024-08-17 00:00 UT   01 48 48.8   +00 26 16    95.157   95.646  118.6    0.5   255   18.7 
2024-08-18 00:00 UT   01 48 47.9   +00 26 26    95.143   95.645  119.5    0.5   255   18.7 
2024-08-19 00:00 UT   01 48 46.9   +00 26 36    95.128   95.645  120.5    0.5   255   18.7 
2024-08-20 00:00 UT   01 48 45.9   +00 26 45    95.114   95.645  121.4    0.5   256   18.7 
2024-08-21 00:00 UT   01 48 44.9   +00 26 56    95.100   95.645  122.4    0.5   256   18.7 
2024-08-22 00:00 UT   01 48 43.8   +00 27 06    95.086   95.645  123.3    0.5   256   18.7 
2024-08-23 00:00 UT   01 48 42.7   +00 27 16    95.072   95.644  124.2    0.5   256   18.7 
2024-08-24 00:00 UT   01 48 41.6   +00 27 27    95.058   95.644  125.2    0.5   257   18.7 
2024-08-25 00:00 UT   01 48 40.4   +00 27 37    95.044   95.644  126.1    0.5   257   18.7 
2024-08-26 00:00 UT   01 48 39.2   +00 27 48    95.031   95.644  127.1    0.5   257   18.7 

    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.