(15) Eunomia
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Today	20 Sep 2026	11.5	3.137 AU	3.971 AU	13h18m	-18°07'	29.6°	9.1°
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
2026-09-20 00:00 UT   13 18 35.8   -18 07 06     3.971    3.137   29.6    9.1   129   11.5 
2026-09-20 03:10 UT   13 18 46.7   -18 07 59     3.972    3.137   29.5    9.1   129   11.5 
2026-09-21 00:00 UT   13 19 58.2   -18 13 50     3.978    3.137   29.0    8.9   129   11.5 
2026-09-22 00:00 UT   13 21 20.9   -18 20 36     3.984    3.137   28.4    8.8   129   11.5 
2026-09-23 00:00 UT   13 22 43.7   -18 27 22     3.990    3.137   27.8    8.6   130   11.5 
2026-09-24 00:00 UT   13 24 06.8   -18 34 09     3.996    3.137   27.2    8.4   130   11.5 
2026-09-25 00:00 UT   13 25 30.2   -18 40 57     4.001    3.137   26.6    8.2   130   11.5 
2026-09-26 00:00 UT   13 26 53.7   -18 47 46     4.007    3.137   26.0    8.1   131   11.5 
2026-09-27 00:00 UT   13 28 17.5   -18 54 36     4.012    3.137   25.4    7.9   131   11.5 
2026-09-28 00:00 UT   13 29 41.5   -19 01 26     4.018    3.137   24.8    7.7   132   11.5 
2026-09-29 00:00 UT   13 31 05.7   -19 08 17     4.023    3.136   24.3    7.5   132   11.5 
2026-09-30 00:00 UT   13 32 30.2   -19 15 08     4.028    3.136   23.7    7.4   133   11.5 
2026-10-01 00:00 UT   13 33 54.8   -19 22 00     4.033    3.136   23.1    7.2   133   11.5 
2026-10-02 00:00 UT   13 35 19.7   -19 28 53     4.037    3.136   22.5    7.0   134   11.5 
2026-10-03 00:00 UT   13 36 44.8   -19 35 45     4.042    3.136   21.9    6.8   134   11.4 
2026-10-04 00:00 UT   13 38 10.1   -19 42 39     4.046    3.136   21.4    6.7   135   11.4 
2026-10-05 00:00 UT   13 39 35.6   -19 49 33     4.051    3.136   20.8    6.5   136   11.4 
2026-10-06 00:00 UT   13 41 01.3   -19 56 27     4.055    3.135   20.2    6.3   136   11.4 
2026-10-07 00:00 UT   13 42 27.2   -20 03 21     4.059    3.135   19.6    6.2   137   11.4 
2026-10-08 00:00 UT   13 43 53.4   -20 10 16     4.062    3.135   19.1    6.0   138   11.4 
2026-10-09 00:00 UT   13 45 19.7   -20 17 10     4.066    3.135   18.5    5.8   139   11.4 
2026-10-10 00:00 UT   13 46 46.2   -20 24 05     4.070    3.135   18.0    5.6   139   11.4 
2026-10-11 00:00 UT   13 48 12.9   -20 31 00     4.073    3.134   17.4    5.5   140   11.4 
2026-10-12 00:00 UT   13 49 39.9   -20 37 55     4.076    3.134   16.9    5.3   141   11.4 
2026-10-13 00:00 UT   13 51 07.0   -20 44 50     4.079    3.134   16.3    5.1   142   11.4 
2026-10-14 00:00 UT   13 52 34.2   -20 51 45     4.082    3.134   15.8    5.0   144   11.4 

    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.