(354) Eleonora
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Today	9 May 2025	10.4	2.755 AU	1.839 AU	16h20m	+06°57'	149.2°	10.8°
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
2025-05-09 00:00 UT   16 20 21.9   +06 57 21     1.839    2.755  149.2   10.8   218   10.4 
2025-05-09 15:15 UT   16 19 53.1   +06 59 52     1.838    2.755  149.5   10.7   217   10.3 
2025-05-10 00:00 UT   16 19 36.5   +07 01 16     1.837    2.756  149.6   10.7   216   10.3 
2025-05-11 00:00 UT   16 18 50.3   +07 04 58     1.836    2.757  150.0   10.5   214   10.3 
2025-05-12 00:00 UT   16 18 03.5   +07 08 28     1.834    2.758  150.4   10.4   212   10.3 
2025-05-13 00:00 UT   16 17 16.1   +07 11 45     1.833    2.759  150.7   10.3   209   10.3 
2025-05-14 00:00 UT   16 16 28.1   +07 14 48     1.833    2.760  151.0   10.2   207   10.3 
2025-05-15 00:00 UT   16 15 39.7   +07 17 38     1.832    2.762  151.3   10.1   205   10.3 
2025-05-16 00:00 UT   16 14 50.8   +07 20 14     1.832    2.763  151.5   10.1   202   10.3 
2025-05-17 00:00 UT   16 14 01.4   +07 22 36     1.832    2.764  151.7   10.0   200   10.3 
2025-05-18 00:00 UT   16 13 11.8   +07 24 45     1.832    2.765  151.8   10.0   197   10.3 
2025-05-19 00:00 UT   16 12 21.8   +07 26 38     1.833    2.766  151.9    9.9   195   10.3 
2025-05-20 00:00 UT   16 11 31.6   +07 28 18     1.833    2.767  151.9    9.9   192   10.3 
2025-05-21 00:00 UT   16 10 41.3   +07 29 43     1.834    2.769  152.0    9.9   190   10.3 
2025-05-22 00:00 UT   16 09 50.7   +07 30 53     1.835    2.770  151.9    9.9   188   10.3 
2025-05-23 00:00 UT   16 09 00.2   +07 31 48     1.837    2.771  151.8    9.9   185   10.3 
2025-05-24 00:00 UT   16 08 09.6   +07 32 29     1.838    2.772  151.7   10.0   183   10.3 
2025-05-25 00:00 UT   16 07 19.0   +07 32 54     1.840    2.773  151.6   10.0   180   10.3 
2025-05-26 00:00 UT   16 06 28.5   +07 33 04     1.842    2.774  151.4   10.1   178   10.3 
2025-05-27 00:00 UT   16 05 38.2   +07 32 59     1.845    2.775  151.1   10.2   176   10.3 
2025-05-28 00:00 UT   16 04 48.1   +07 32 39     1.847    2.777  150.8   10.2   173   10.4 
2025-05-29 00:00 UT   16 03 58.3   +07 32 04     1.850    2.778  150.5   10.3   171   10.4 
2025-05-30 00:00 UT   16 03 08.8   +07 31 13     1.853    2.779  150.2   10.5   169   10.4 
2025-05-31 00:00 UT   16 02 19.7   +07 30 07     1.857    2.780  149.8   10.6   167   10.4 
2025-06-01 00:00 UT   16 01 31.0   +07 28 47     1.860    2.781  149.4   10.7   165   10.4 
2025-06-02 00:00 UT   16 00 42.8   +07 27 11     1.864    2.782  148.9   10.8   162   10.4 
2025-06-03 00:00 UT   15 59 55.2   +07 25 20     1.868    2.784  148.5   11.0   160   10.4 
2025-06-04 00:00 UT   15 59 08.1   +07 23 15     1.872    2.785  147.9   11.1   159   10.4 
2025-06-05 00:00 UT   15 58 21.7   +07 20 55     1.877    2.786  147.4   11.3   157   10.4 
2025-06-06 00:00 UT   15 57 35.9   +07 18 21     1.882    2.787  146.9   11.5   155   10.5 
2025-06-07 00:00 UT   15 56 50.8   +07 15 33     1.887    2.788  146.3   11.7   153   10.5 
2025-06-08 00:00 UT   15 56 06.5   +07 12 30     1.892    2.789  145.7   11.8   151   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.