(354) Eleonora
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Today	22 Jan 2025	11.5	2.635 AU	2.803 AU	15h37m	-02°35'	70.1°	20.6°
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)                : 0.1116344
            a (Semimajor axis)              : 2.7997696
            i (Inclination)                 : 18.36109
            Ω (Longitude of ascending node) : 140.21720
            ω (Argument of perihelion)      : 7.97417
            M (Mean anomaly)                : 32.43534
            Epoch                           : 2024 Oct 17

            L (Longitude of perihelion)     : 147.79024
            B (Latitude of perihelion)      : 2.50460
            P (Orbital period in years)     : 4.68            
        

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
2025-01-22 00:00 UT   15 37 25.5   -02 35 16     2.803    2.635   70.1   20.6   290   11.5 
2025-01-22 04:50 UT   15 37 42.1   -02 35 07     2.801    2.636   70.2   20.6   290   11.5 
2025-01-23 00:00 UT   15 38 47.4   -02 34 28     2.792    2.636   70.7   20.6   290   11.5 
2025-01-24 00:00 UT   15 40 08.7   -02 33 33     2.781    2.638   71.4   20.7   289   11.5 
2025-01-25 00:00 UT   15 41 29.4   -02 32 30     2.770    2.639   72.1   20.8   289   11.5 
2025-01-26 00:00 UT   15 42 49.4   -02 31 20     2.759    2.640   72.7   20.9   289   11.5 
2025-01-27 00:00 UT   15 44 08.7   -02 30 02     2.748    2.641   73.4   20.9   289   11.5 
2025-01-28 00:00 UT   15 45 27.3   -02 28 36     2.737    2.642   74.0   21.0   288   11.5 
2025-01-29 00:00 UT   15 46 45.3   -02 27 02     2.726    2.643   74.7   21.1   288   11.5 
2025-01-30 00:00 UT   15 48 02.5   -02 25 21     2.715    2.644   75.4   21.1   288   11.5 
2025-01-31 00:00 UT   15 49 19.0   -02 23 33     2.703    2.645   76.1   21.2   287   11.5 
2025-02-01 00:00 UT   15 50 34.7   -02 21 36     2.692    2.646   76.7   21.3   287   11.5 
2025-02-02 00:00 UT   15 51 49.7   -02 19 32     2.681    2.647   77.4   21.3   287   11.4 
2025-02-03 00:00 UT   15 53 03.9   -02 17 21     2.670    2.648   78.1   21.4   286   11.4 
2025-02-04 00:00 UT   15 54 17.3   -02 15 01     2.658    2.649   78.8   21.4   286   11.4 
2025-02-05 00:00 UT   15 55 30.0   -02 12 35     2.647    2.650   79.5   21.5   286   11.4 
2025-02-06 00:00 UT   15 56 41.8   -02 10 01     2.636    2.651   80.1   21.5   286   11.4 
2025-02-07 00:00 UT   15 57 52.8   -02 07 19     2.624    2.652   80.8   21.5   285   11.4 
2025-02-08 00:00 UT   15 59 03.0   -02 04 30     2.613    2.653   81.5   21.6   285   11.4 
2025-02-09 00:00 UT   16 00 12.3   -02 01 33     2.601    2.654   82.2   21.6   285   11.4 
2025-02-10 00:00 UT   16 01 20.8   -01 58 29     2.590    2.656   82.9   21.6   284   11.4 
2025-02-11 00:00 UT   16 02 28.4   -01 55 17     2.579    2.657   83.6   21.7   284   11.4 
2025-02-12 00:00 UT   16 03 35.1   -01 51 59     2.567    2.658   84.3   21.7   284   11.4 
2025-02-13 00:00 UT   16 04 40.9   -01 48 32     2.556    2.659   85.0   21.7   283   11.4 
2025-02-14 00:00 UT   16 05 45.9   -01 44 59     2.544    2.660   85.7   21.7   283   11.4 
2025-02-15 00:00 UT   16 06 49.8   -01 41 18     2.533    2.661   86.4   21.7   283   11.3 
2025-02-16 00:00 UT   16 07 52.9   -01 37 30     2.521    2.662   87.2   21.8   282   11.3 
2025-02-17 00:00 UT   16 08 54.9   -01 33 34     2.510    2.663   87.9   21.8   282   11.3 
2025-02-18 00:00 UT   16 09 56.0   -01 29 32     2.499    2.664   88.6   21.8   282   11.3 
2025-02-19 00:00 UT   16 10 56.1   -01 25 22     2.487    2.665   89.3   21.8   281   11.3 

    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.