(15) Eunomia
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Opposition	24 Mar 2026	9.9	3.062 AU	2.093 AU	11h49m	-16°50'	163.5°	5.3°
Today	14 May 2026	10.7	3.101 AU	2.439 AU	11h23m	-12°13'	122.5°	15.9°

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 Eunomia are:

            e (Eccentricity)                : 0.1877813
            a (Semimajor axis)              : 2.6421861
            i (Inclination)                 : 11.76143
            Ω (Longitude of ascending node) : 292.88123
            ω (Argument of perihelion)      : 98.50720
            M (Mean anomaly)                : 113.72579
            Epoch                           : 2025 Nov 21

            L (Longitude of perihelion)     : 211.56812
            B (Latitude of perihelion)      : 11.63020
            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
2026-05-14 00:00 UT   11 23 50.9   -12 13 22     2.439    3.101  122.5   15.9   104   10.7 
2026-05-14 10:23 UT   11 23 51.4   -12 11 39     2.444    3.102  122.1   16.0   104   10.7 
2026-05-15 00:00 UT   11 23 52.5   -12 09 25     2.451    3.102  121.6   16.1   105   10.7 
2026-05-16 00:00 UT   11 23 55.5   -12 05 36     2.463    3.103  120.7   16.3   105   10.7 
2026-05-17 00:00 UT   11 23 59.8   -12 01 54     2.475    3.103  119.7   16.4   105   10.7 
2026-05-18 00:00 UT   11 24 05.4   -11 58 20     2.487    3.104  118.8   16.6   106   10.7 
2026-05-19 00:00 UT   11 24 12.2   -11 54 53     2.499    3.104  117.9   16.7   106   10.8 
2026-05-20 00:00 UT   11 24 20.3   -11 51 34     2.512    3.105  117.0   16.9   106   10.8 
2026-05-21 00:00 UT   11 24 29.7   -11 48 23     2.525    3.106  116.1   17.0   107   10.8 
2026-05-22 00:00 UT   11 24 40.3   -11 45 20     2.537    3.106  115.2   17.1   107   10.8 
2026-05-23 00:00 UT   11 24 52.1   -11 42 24     2.550    3.107  114.3   17.3   107   10.8 
2026-05-24 00:00 UT   11 25 05.1   -11 39 37     2.563    3.107  113.4   17.4   108   10.8 
2026-05-25 00:00 UT   11 25 19.3   -11 36 57     2.576    3.108  112.5   17.5   108   10.9 
2026-05-26 00:00 UT   11 25 34.7   -11 34 25     2.589    3.109  111.7   17.6   108   10.9 
2026-05-27 00:00 UT   11 25 51.3   -11 32 01     2.602    3.109  110.8   17.7   108   10.9 
2026-05-28 00:00 UT   11 26 09.0   -11 29 45     2.615    3.110  109.9   17.8   109   10.9 
2026-05-29 00:00 UT   11 26 27.9   -11 27 37     2.629    3.110  109.0   17.9   109   10.9 
2026-05-30 00:00 UT   11 26 47.8   -11 25 37     2.642    3.111  108.2   18.0   109   10.9 
2026-05-31 00:00 UT   11 27 08.9   -11 23 45     2.655    3.111  107.3   18.1   110   10.9 
2026-06-01 00:00 UT   11 27 31.1   -11 22 00     2.669    3.112  106.5   18.2   110   11.0 
2026-06-02 00:00 UT   11 27 54.3   -11 20 23     2.682    3.113  105.6   18.3   110   11.0 
2026-06-03 00:00 UT   11 28 18.6   -11 18 55     2.696    3.113  104.8   18.4   110   11.0 
2026-06-04 00:00 UT   11 28 44.0   -11 17 34     2.710    3.114  103.9   18.4   110   11.0 
2026-06-05 00:00 UT   11 29 10.4   -11 16 20     2.723    3.114  103.1   18.5   111   11.0 
2026-06-06 00:00 UT   11 29 37.8   -11 15 15     2.737    3.115  102.3   18.6   111   11.0 
2026-06-07 00:00 UT   11 30 06.2   -11 14 17     2.751    3.115  101.4   18.6   111   11.0 
2026-06-08 00:00 UT   11 30 35.6   -11 13 27     2.765    3.116  100.6   18.7   111   11.1 
2026-06-09 00:00 UT   11 31 06.0   -11 12 44     2.779    3.116   99.8   18.7   112   11.1 
2026-06-10 00:00 UT   11 31 37.4   -11 12 09     2.793    3.117   99.0   18.8   112   11.1 
2026-06-11 00:00 UT   11 32 09.7   -11 11 42     2.806    3.117   98.2   18.8   112   11.1 
2026-06-12 00:00 UT   11 32 43.0   -11 11 22     2.820    3.118   97.4   18.8   112   11.1 
2026-06-13 00:00 UT   11 33 17.2   -11 11 10     2.834    3.118   96.6   18.9   112   11.1 

    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.