(354) Eleonora
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Today	26 Mar 2025	10.9	2.704 AU	2.110 AU	16h33m	+02°05'	116.3°	19.3°
Opposition	19 May 2025	10.3	2.767 AU	1.833 AU	16h11m	+07°27'	151.9°	9.9°

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)                : 0.1117700
            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
2025-03-26 00:00 UT   16 33 28.6   +02 05 05     2.110    2.704  116.3   19.3   267   10.9 
2025-03-26 10:30 UT   16 33 34.9   +02 08 18     2.106    2.705  116.7   19.2   266   10.9 
2025-03-27 00:00 UT   16 33 42.6   +02 12 28     2.100    2.705  117.1   19.2   266   10.9 
2025-03-28 00:00 UT   16 33 55.0   +02 19 54     2.091    2.706  117.9   19.0   266   10.9 
2025-03-29 00:00 UT   16 34 05.9   +02 27 21     2.082    2.708  118.8   18.9   265   10.9 
2025-03-30 00:00 UT   16 34 15.3   +02 34 51     2.073    2.709  119.6   18.7   264   10.9 
2025-03-31 00:00 UT   16 34 23.1   +02 42 22     2.064    2.710  120.4   18.5   264   10.8 
2025-04-01 00:00 UT   16 34 29.3   +02 49 54     2.055    2.711  121.2   18.4   263   10.8 
2025-04-02 00:00 UT   16 34 34.0   +02 57 27     2.046    2.712  122.1   18.2   262   10.8 
2025-04-03 00:00 UT   16 34 37.1   +03 05 01     2.037    2.713  122.9   18.0   262   10.8 
2025-04-04 00:00 UT   16 34 38.6   +03 12 35     2.029    2.714  123.7   17.8   261   10.8 
2025-04-05 00:00 UT   16 34 38.6   +03 20 10     2.020    2.716  124.5   17.7   260   10.8 
2025-04-06 00:00 UT   16 34 37.1   +03 27 43     2.012    2.717  125.4   17.5   260   10.8 
2025-04-07 00:00 UT   16 34 34.0   +03 35 17     2.004    2.718  126.2   17.3   259   10.7 
2025-04-08 00:00 UT   16 34 29.3   +03 42 49     1.996    2.719  127.0   17.1   258   10.7 
2025-04-09 00:00 UT   16 34 23.1   +03 50 20     1.988    2.720  127.9   16.9   257   10.7 
2025-04-10 00:00 UT   16 34 15.3   +03 57 50     1.980    2.721  128.7   16.7   257   10.7 
2025-04-11 00:00 UT   16 34 06.1   +04 05 18     1.973    2.722  129.5   16.5   256   10.7 
2025-04-12 00:00 UT   16 33 55.2   +04 12 44     1.966    2.724  130.3   16.3   255   10.7 
2025-04-13 00:00 UT   16 33 42.9   +04 20 07     1.958    2.725  131.1   16.1   254   10.7 
2025-04-14 00:00 UT   16 33 29.0   +04 27 27     1.951    2.726  131.9   15.9   253   10.6 
2025-04-15 00:00 UT   16 33 13.6   +04 34 45     1.945    2.727  132.8   15.7   252   10.6 
2025-04-16 00:00 UT   16 32 56.7   +04 41 58     1.938    2.728  133.6   15.5   251   10.6 
2025-04-17 00:00 UT   16 32 38.4   +04 49 08     1.931    2.729  134.4   15.2   250   10.6 
2025-04-18 00:00 UT   16 32 18.5   +04 56 14     1.925    2.730  135.2   15.0   249   10.6 
2025-04-19 00:00 UT   16 31 57.2   +05 03 15     1.919    2.732  136.0   14.8   248   10.6 
2025-04-20 00:00 UT   16 31 34.5   +05 10 11     1.913    2.733  136.7   14.6   247   10.6 
2025-04-21 00:00 UT   16 31 10.3   +05 17 01     1.907    2.734  137.5   14.4   246   10.5 
2025-04-22 00:00 UT   16 30 44.7   +05 23 46     1.902    2.735  138.3   14.2   245   10.5 
2025-04-23 00:00 UT   16 30 17.7   +05 30 25     1.896    2.736  139.1   13.9   244   10.5 
2025-04-24 00:00 UT   16 29 49.3   +05 36 57     1.891    2.737  139.8   13.7   243   10.5 
2025-04-25 00:00 UT   16 29 19.6   +05 43 22     1.886    2.739  140.6   13.5   241   10.5 

    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.