(354) Eleonora
ephemeris date magn radius delta ra dec elong phase
Today6 Dec 202512.02.980 AU3.874 AU18h13m-14°04'21.5°7.0°
Opposition15 Aug 202610.33.112 AU2.099 AU21h40m-15°03'179.0°0.3°
(354) Eleonora - 2025-12-06
astro.vanbuitenen.nl


 
-1 year
-1 month
-1 day
Now
+1 day
+1 month
+1 year

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)                 : 18.36129
            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
2025-12-06 00:00 UT   18 13 15.5   -14 04 53     3.874    2.980   21.5    7.0    64   12.0 
2025-12-06 16:11 UT   18 14 19.6   -14 06 18     3.878    2.980   21.1    6.9    64   12.0 
2025-12-07 00:00 UT   18 14 50.6   -14 06 58     3.880    2.980   21.0    6.8    63   12.0 
2025-12-08 00:00 UT   18 16 25.8   -14 08 58     3.885    2.981   20.4    6.6    62   12.0 
2025-12-09 00:00 UT   18 18 01.1   -14 10 53     3.890    2.982   19.8    6.4    62   12.0 
2025-12-10 00:00 UT   18 19 36.5   -14 12 43     3.895    2.983   19.2    6.2    61   12.0 
2025-12-11 00:00 UT   18 21 12.0   -14 14 27     3.900    2.984   18.7    6.1    60   12.0 
2025-12-12 00:00 UT   18 22 47.6   -14 16 07     3.905    2.985   18.1    5.9    59   12.0 
2025-12-13 00:00 UT   18 24 23.2   -14 17 41     3.910    2.986   17.6    5.7    57   12.0 
2025-12-14 00:00 UT   18 25 58.9   -14 19 10     3.914    2.987   17.0    5.5    56   12.0 
2025-12-15 00:00 UT   18 27 34.7   -14 20 34     3.918    2.987   16.4    5.4    55   12.0 
2025-12-16 00:00 UT   18 29 10.6   -14 21 53     3.923    2.988   15.9    5.2    54   11.9 
2025-12-17 00:00 UT   18 30 46.5   -14 23 07     3.927    2.989   15.4    5.0    52   11.9 
2025-12-18 00:00 UT   18 32 22.5   -14 24 16     3.931    2.990   14.8    4.8    51   11.9 
2025-12-19 00:00 UT   18 33 58.5   -14 25 20     3.934    2.991   14.3    4.7    49   11.9 
2025-12-20 00:00 UT   18 35 34.5   -14 26 18     3.938    2.992   13.8    4.5    48   11.9 
2025-12-21 00:00 UT   18 37 10.6   -14 27 12     3.941    2.993   13.3    4.3    46   11.9 
2025-12-22 00:00 UT   18 38 46.7   -14 28 00     3.945    2.993   12.8    4.2    44   11.9 
2025-12-23 00:00 UT   18 40 22.8   -14 28 44     3.948    2.994   12.3    4.0    42   11.9 
2025-12-24 00:00 UT   18 41 58.9   -14 29 23     3.951    2.995   11.9    3.9    40   11.9 
2025-12-25 00:00 UT   18 43 35.0   -14 29 56     3.954    2.996   11.4    3.7    38   11.9 
2025-12-26 00:00 UT   18 45 11.2   -14 30 25     3.957    2.997   11.0    3.6    35   11.9 
2025-12-27 00:00 UT   18 46 47.3   -14 30 49     3.959    2.998   10.6    3.4    32   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.