(354) Eleonora
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Today	3 May 2026	12.0	3.081 AU	3.126 AU	21h39m	-08°57'	78.2°	18.7°
Opposition	15 Aug 2026	10.3	3.112 AU	2.099 AU	21h40m	-15°03'	179.0°	0.3°

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 Eleonora are:

            e (Eccentricity)                : 0.1118359
            a (Semimajor axis)              : 2.8006837
            i (Inclination)                 : 18.36128
            Ω (Longitude of ascending node) : 140.20579
            ω (Argument of perihelion)      : 8.12173
            M (Mean anomaly)                : 116.41401
            Epoch                           : 2025 Nov 21

            L (Longitude of perihelion)     : 147.91914
            B (Latitude of perihelion)      : 2.55069
            P (Orbital period in years)     : 4.69            
        

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
2026-05-03 00:00 UT   21 39 11.7   -08 57 50     3.126    3.081   78.2   18.7   252   12.0 
2026-05-03 23:47 UT   21 40 03.5   -08 55 21     3.112    3.082   78.9   18.7   252   12.0 
2026-05-04 00:00 UT   21 40 03.9   -08 55 20     3.112    3.082   78.9   18.7   252   12.0 
2026-05-05 00:00 UT   21 40 55.4   -08 52 53     3.099    3.082   79.7   18.8   252   12.0 
2026-05-06 00:00 UT   21 41 46.1   -08 50 31     3.085    3.082   80.4   18.8   252   12.0 
2026-05-07 00:00 UT   21 42 36.1   -08 48 13     3.072    3.083   81.2   18.9   251   12.0 
2026-05-08 00:00 UT   21 43 25.3   -08 45 60     3.058    3.083   81.9   18.9   251   12.0 
2026-05-09 00:00 UT   21 44 13.7   -08 43 50     3.045    3.084   82.7   18.9   251   12.0 
2026-05-10 00:00 UT   21 45 01.4   -08 41 46     3.031    3.084   83.5   19.0   251   12.0 
2026-05-11 00:00 UT   21 45 48.2   -08 39 46     3.018    3.085   84.2   19.0   251   12.0 
2026-05-12 00:00 UT   21 46 34.3   -08 37 50     3.004    3.085   85.0   19.0   251   12.0 
2026-05-13 00:00 UT   21 47 19.5   -08 35 60     2.991    3.086   85.8   19.1   251   12.0 
2026-05-14 00:00 UT   21 48 03.9   -08 34 14     2.977    3.086   86.6   19.1   251   12.0 
2026-05-15 00:00 UT   21 48 47.5   -08 32 34     2.963    3.086   87.4   19.1   251   11.9 
2026-05-16 00:00 UT   21 49 30.2   -08 30 59     2.950    3.087   88.1   19.1   251   11.9 
2026-05-17 00:00 UT   21 50 12.0   -08 29 30     2.936    3.087   88.9   19.1   250   11.9 
2026-05-18 00:00 UT   21 50 53.0   -08 28 06     2.922    3.088   89.7   19.1   250   11.9 
2026-05-19 00:00 UT   21 51 33.1   -08 26 48     2.908    3.088   90.5   19.1   250   11.9 
2026-05-20 00:00 UT   21 52 12.3   -08 25 35     2.895    3.089   91.3   19.1   250   11.9 
2026-05-21 00:00 UT   21 52 50.6   -08 24 28     2.881    3.089   92.1   19.1   250   11.9 
2026-05-22 00:00 UT   21 53 28.0   -08 23 28     2.867    3.089   92.9   19.1   250   11.9 
2026-05-23 00:00 UT   21 54 04.5   -08 22 33     2.854    3.090   93.8   19.1   250   11.9 
2026-05-24 00:00 UT   21 54 40.1   -08 21 45     2.840    3.090   94.6   19.1   250   11.9 
2026-05-25 00:00 UT   21 55 14.7   -08 21 03     2.826    3.091   95.4   19.0   250   11.8 
2026-05-26 00:00 UT   21 55 48.3   -08 20 28     2.813    3.091   96.2   19.0   250   11.8 
2026-05-27 00:00 UT   21 56 21.0   -08 19 59     2.799    3.091   97.0   19.0   250   11.8 
2026-05-28 00:00 UT   21 56 52.8   -08 19 37     2.785    3.092   97.9   18.9   249   11.8 
2026-05-29 00:00 UT   21 57 23.5   -08 19 22     2.772    3.092   98.7   18.9   249   11.8 
2026-05-30 00:00 UT   21 57 53.3   -08 19 13     2.758    3.092   99.6   18.9   249   11.8 
2026-05-31 00:00 UT   21 58 22.1   -08 19 12     2.745    3.093  100.4   18.8   249   11.8 
2026-06-01 00:00 UT   21 58 49.9   -08 19 17     2.731    3.093  101.3   18.8   249   11.8 
2026-06-02 00:00 UT   21 59 16.6   -08 19 30     2.718    3.094  102.1   18.7   249   11.8 

    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.