(15) Eunomia
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Today	23 Aug 2026	11.6	3.138 AU	3.741 AU	12h41m	-15°09'	46.9°	13.6°
Opposition	9 Jun 2027	9.5	2.928 AU	1.924 AU	17h05m	-33°11'	169.7°	3.6°

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 Eunomia are:

            e (Eccentricity)                : 0.1877708
            a (Semimajor axis)              : 2.6419587
            i (Inclination)                 : 11.76139
            Ω (Longitude of ascending node) : 292.88078
            ω (Argument of perihelion)      : 98.46132
            M (Mean anomaly)                : 159.68910
            Epoch                           : 2026 Jun 09

            L (Longitude of perihelion)     : 211.52085
            B (Latitude of perihelion)      : 11.63157
            P (Orbital period in years)     : 4.29            
        

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
2026-08-23 00:00 UT   12 41 55.8   -15 09 01     3.741    3.138   46.9   13.6   123   11.6 
2026-08-23 00:47 UT   12 41 58.2   -15 09 13     3.741    3.138   46.8   13.6   123   11.6 
2026-08-24 00:00 UT   12 43 10.4   -15 14 54     3.751    3.138   46.2   13.5   123   11.6 
2026-08-25 00:00 UT   12 44 25.4   -15 20 50     3.761    3.138   45.6   13.3   123   11.6 
2026-08-26 00:00 UT   12 45 40.6   -15 26 49     3.770    3.138   45.0   13.2   123   11.6 
2026-08-27 00:00 UT   12 46 56.2   -15 32 49     3.780    3.138   44.3   13.0   123   11.6 
2026-08-28 00:00 UT   12 48 12.0   -15 38 53     3.789    3.138   43.7   12.9   123   11.6 
2026-08-29 00:00 UT   12 49 28.2   -15 44 58     3.799    3.138   43.1   12.7   124   11.6 
2026-08-30 00:00 UT   12 50 44.7   -15 51 06     3.808    3.138   42.5   12.5   124   11.6 
2026-08-31 00:00 UT   12 52 01.4   -15 57 16     3.817    3.138   41.8   12.4   124   11.6 
2026-09-01 00:00 UT   12 53 18.5   -16 03 28     3.826    3.138   41.2   12.2   124   11.6 
2026-09-02 00:00 UT   12 54 35.9   -16 09 43     3.835    3.138   40.6   12.1   124   11.5 
2026-09-03 00:00 UT   12 55 53.5   -16 15 59     3.843    3.138   40.0   11.9   125   11.5 
2026-09-04 00:00 UT   12 57 11.5   -16 22 18     3.852    3.138   39.4   11.8   125   11.5 
2026-09-05 00:00 UT   12 58 29.7   -16 28 38     3.860    3.138   38.7   11.6   125   11.5 
2026-09-06 00:00 UT   12 59 48.2   -16 35 01     3.869    3.138   38.1   11.4   125   11.5 
2026-09-07 00:00 UT   13 01 07.0   -16 41 25     3.877    3.138   37.5   11.3   125   11.5 
2026-09-08 00:00 UT   13 02 26.1   -16 47 51     3.885    3.138   36.9   11.1   126   11.5 
2026-09-09 00:00 UT   13 03 45.5   -16 54 19     3.893    3.138   36.3   11.0   126   11.5 
2026-09-10 00:00 UT   13 05 05.1   -17 00 49     3.901    3.138   35.7   10.8   126   11.5 
2026-09-11 00:00 UT   13 06 25.0   -17 07 20     3.908    3.138   35.1   10.6   126   11.5 
2026-09-12 00:00 UT   13 07 45.2   -17 13 53     3.916    3.138   34.4   10.5   126   11.5 
2026-09-13 00:00 UT   13 09 05.7   -17 20 28     3.923    3.138   33.8   10.3   127   11.5 
2026-09-14 00:00 UT   13 10 26.4   -17 27 03     3.931    3.138   33.2   10.1   127   11.5 
2026-09-15 00:00 UT   13 11 47.3   -17 33 41     3.938    3.138   32.6    9.9   127   11.5 
2026-09-16 00:00 UT   13 13 08.5   -17 40 19     3.945    3.138   32.0    9.8   127   11.5 
2026-09-17 00:00 UT   13 14 30.0   -17 46 59     3.952    3.138   31.4    9.6   128   11.5 

    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.