(354) Eleonora
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Today	15 Aug 2026	10.3	3.112 AU	2.099 AU	21h40m	-14°59'	178.8°	0.4°
Opposition	15 Aug 2026	10.3	3.112 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)                : 0.1118861
            a (Semimajor axis)              : 2.8007731
            i (Inclination)                 : 18.36241
            Ω (Longitude of ascending node) : 140.20387
            ω (Argument of perihelion)      : 8.17864
            M (Mean anomaly)                : 158.40049
            Epoch                           : 2026 Jun 09

            L (Longitude of perihelion)     : 147.97129
            B (Latitude of perihelion)      : 2.56861
            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
2026-08-15 00:00 UT   21 40 27.0   -14 59 00     2.099    3.112  178.8    0.4   311   10.3 
2026-08-15 07:20 UT   21 40 12.8   -15 01 43     2.099    3.112  179.0    0.3   329   10.3 
2026-08-16 00:00 UT   21 39 40.4   -15 07 53     2.100    3.112  178.8    0.4    10   10.3 
2026-08-17 00:00 UT   21 38 53.8   -15 16 45     2.100    3.112  177.9    0.7    38   10.4 
2026-08-18 00:00 UT   21 38 07.2   -15 25 35     2.101    3.112  176.8    1.0    49   10.4 
2026-08-19 00:00 UT   21 37 20.6   -15 34 22     2.102    3.112  175.6    1.4    54   10.4 
2026-08-20 00:00 UT   21 36 34.2   -15 43 07     2.104    3.113  174.5    1.8    57   10.5 
2026-08-21 00:00 UT   21 35 47.9   -15 51 49     2.106    3.113  173.3    2.2    59   10.5 
2026-08-22 00:00 UT   21 35 01.9   -16 00 28     2.108    3.113  172.1    2.6    60   10.5 
2026-08-23 00:00 UT   21 34 16.1   -16 09 03     2.110    3.113  171.0    2.9    61   10.6 
2026-08-24 00:00 UT   21 33 30.7   -16 17 34     2.113    3.113  169.8    3.3    62   10.6 
2026-08-25 00:00 UT   21 32 45.6   -16 26 01     2.116    3.113  168.6    3.7    63   10.6 
2026-08-26 00:00 UT   21 32 00.9   -16 34 23     2.119    3.113  167.4    4.1    63   10.6 
2026-08-27 00:00 UT   21 31 16.6   -16 42 40     2.122    3.113  166.2    4.4    64   10.7 
2026-08-28 00:00 UT   21 30 32.9   -16 50 53     2.126    3.113  165.1    4.8    64   10.7 
2026-08-29 00:00 UT   21 29 49.6   -16 58 59     2.130    3.113  163.9    5.2    64   10.7 
2026-08-30 00:00 UT   21 29 07.0   -17 07 01     2.135    3.113  162.7    5.5    65   10.7 
2026-08-31 00:00 UT   21 28 25.0   -17 14 56     2.139    3.113  161.6    5.9    65   10.8 
2026-09-01 00:00 UT   21 27 43.6   -17 22 45     2.144    3.114  160.4    6.2    65   10.8 
2026-09-02 00:00 UT   21 27 02.9   -17 30 27     2.149    3.114  159.2    6.6    66   10.8 
2026-09-03 00:00 UT   21 26 23.0   -17 38 03     2.155    3.114  158.1    6.9    66   10.8 
2026-09-04 00:00 UT   21 25 43.8   -17 45 32     2.161    3.114  156.9    7.3    66   10.8 
2026-09-05 00:00 UT   21 25 05.5   -17 52 54     2.167    3.114  155.8    7.6    66   10.9 
2026-09-06 00:00 UT   21 24 28.0   -18 00 08     2.173    3.114  154.6    8.0    66   10.9 
2026-09-07 00:00 UT   21 23 51.4   -18 07 15     2.179    3.114  153.5    8.3    67   10.9 
2026-09-08 00:00 UT   21 23 15.8   -18 14 14     2.186    3.114  152.3    8.6    67   10.9 
2026-09-09 00:00 UT   21 22 41.1   -18 21 06     2.193    3.114  151.2    9.0    67   10.9 
2026-09-10 00:00 UT   21 22 07.4   -18 27 49     2.200    3.114  150.1    9.3    67   11.0 
2026-09-11 00:00 UT   21 21 34.8   -18 34 24     2.208    3.114  148.9    9.6    67   11.0 
2026-09-12 00:00 UT   21 21 03.2   -18 40 51     2.216    3.114  147.8    9.9    67   11.0 
2026-09-13 00:00 UT   21 20 32.7   -18 47 10     2.224    3.114  146.7   10.2    67   11.0 
2026-09-14 00:00 UT   21 20 03.3   -18 53 19     2.232    3.114  145.6   10.5    68   11.0 

    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.