(354) Eleonora
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Today	31 Aug 2025	11.7	2.884 AU	2.832 AU	16h04m	-04°16'	82.7°	20.3°
Opposition	15 Aug 2026	10.3	3.111 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)                : 0.1117701
            a (Semimajor axis)              : 2.8004273
            i (Inclination)                 : 18.36042
            Ω (Longitude of ascending node) : 140.21125
            ω (Argument of perihelion)      : 8.06410
            M (Mean anomaly)                : 74.41705
            Epoch                           : 2025 May 05

            L (Longitude of perihelion)     : 147.86984
            B (Latitude of perihelion)      : 2.53259
            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. 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
2025-08-31 00:00 UT   16 04 35.4   -04 16 47     2.832    2.884   82.7   20.3    99   11.7 
2025-08-31 17:23 UT   16 05 13.8   -04 23 28     2.842    2.884   82.2   20.3    99   11.7 
2025-09-01 00:00 UT   16 05 28.6   -04 26 00     2.846    2.885   82.0   20.3    99   11.7 
2025-09-02 00:00 UT   16 06 22.6   -04 35 12     2.860    2.886   81.4   20.2    99   11.7 
2025-09-03 00:00 UT   16 07 17.5   -04 44 20     2.873    2.887   80.7   20.2    99   11.8 
2025-09-04 00:00 UT   16 08 13.1   -04 53 26     2.887    2.888   80.0   20.1    98   11.8 
2025-09-05 00:00 UT   16 09 09.5   -05 02 30     2.901    2.889   79.3   20.1    98   11.8 
2025-09-06 00:00 UT   16 10 06.7   -05 11 30     2.914    2.890   78.6   20.0    98   11.8 
2025-09-07 00:00 UT   16 11 04.7   -05 20 28     2.928    2.891   78.0   19.9    98   11.8 
2025-09-08 00:00 UT   16 12 03.4   -05 29 23     2.942    2.892   77.3   19.9    97   11.8 
2025-09-09 00:00 UT   16 13 02.8   -05 38 15     2.955    2.893   76.6   19.8    97   11.8 
2025-09-10 00:00 UT   16 14 03.0   -05 47 04     2.969    2.894   75.9   19.7    97   11.8 
2025-09-11 00:00 UT   16 15 03.9   -05 55 50     2.982    2.895   75.3   19.7    96   11.8 
2025-09-12 00:00 UT   16 16 05.5   -06 04 33     2.996    2.896   74.6   19.6    96   11.8 
2025-09-13 00:00 UT   16 17 07.9   -06 13 13     3.010    2.897   73.9   19.5    96   11.8 
2025-09-14 00:00 UT   16 18 10.9   -06 21 50     3.023    2.899   73.3   19.4    96   11.9 
2025-09-15 00:00 UT   16 19 14.6   -06 30 23     3.036    2.900   72.6   19.3    95   11.9 
2025-09-16 00:00 UT   16 20 19.0   -06 38 54     3.050    2.901   72.0   19.2    95   11.9 
2025-09-17 00:00 UT   16 21 24.1   -06 47 21     3.063    2.902   71.3   19.2    95   11.9 
2025-09-18 00:00 UT   16 22 29.9   -06 55 44     3.077    2.903   70.6   19.1    95   11.9 
2025-09-19 00:00 UT   16 23 36.3   -07 04 04     3.090    2.904   70.0   19.0    94   11.9 
2025-09-20 00:00 UT   16 24 43.4   -07 12 20     3.103    2.905   69.3   18.9    94   11.9 
2025-09-21 00:00 UT   16 25 51.1   -07 20 33     3.116    2.906   68.7   18.8    94   11.9 
2025-09-22 00:00 UT   16 26 59.5   -07 28 43     3.129    2.907   68.0   18.7    94   11.9 
2025-09-23 00:00 UT   16 28 08.5   -07 36 48     3.143    2.908   67.4   18.6    93   11.9 
2025-09-24 00:00 UT   16 29 18.1   -07 44 50     3.156    2.909   66.7   18.5    93   11.9 
2025-09-25 00:00 UT   16 30 28.3   -07 52 48     3.169    2.910   66.1   18.4    93   11.9 
2025-09-26 00:00 UT   16 31 39.1   -08 00 42     3.182    2.911   65.4   18.3    92   11.9 
2025-09-27 00:00 UT   16 32 50.5   -08 08 32     3.194    2.912   64.8   18.1    92   11.9 
2025-09-28 00:00 UT   16 34 02.5   -08 16 19     3.207    2.913   64.1   18.0    92   11.9 

    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.