(15) Eunomia
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Today	21 Oct 2025	11.2	2.862 AU	3.567 AU	11h09m	-01°39'	39.0°	12.6°
Opposition	24 Mar 2026	9.9	3.062 AU	2.093 AU	11h49m	-16°50'	163.5°	5.3°

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 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)                : 113.72578
            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
2025-10-21 00:00 UT   11 09 19.5   -01 39 36     3.567    2.862   39.0   12.6   285   11.2 
2025-10-21 08:29 UT   11 09 46.1   -01 43 21     3.564    2.862   39.2   12.7   285   11.2 
2025-10-22 00:00 UT   11 10 34.7   -01 50 12     3.559    2.863   39.6   12.8   285   11.2 
2025-10-23 00:00 UT   11 11 49.7   -02 00 48     3.552    2.865   40.2   13.0   285   11.2 
2025-10-24 00:00 UT   11 13 04.2   -02 11 23     3.544    2.867   40.9   13.1   285   11.2 
2025-10-25 00:00 UT   11 14 18.4   -02 21 58     3.536    2.868   41.5   13.3   285   11.2 
2025-10-26 00:00 UT   11 15 32.2   -02 32 32     3.529    2.870   42.1   13.4   286   11.2 
2025-10-27 00:00 UT   11 16 45.7   -02 43 06     3.521    2.872   42.8   13.6   286   11.2 
2025-10-28 00:00 UT   11 17 58.7   -02 53 39     3.513    2.873   43.4   13.8   286   11.2 
2025-10-29 00:00 UT   11 19 11.4   -03 04 12     3.504    2.875   44.1   13.9   286   11.2 
2025-10-30 00:00 UT   11 20 23.6   -03 14 44     3.496    2.876   44.7   14.1   286   11.2 
2025-10-31 00:00 UT   11 21 35.5   -03 25 15     3.488    2.878   45.4   14.2   286   11.2 
2025-11-01 00:00 UT   11 22 47.0   -03 35 46     3.479    2.880   46.0   14.4   286   11.2 
2025-11-02 00:00 UT   11 23 58.1   -03 46 16     3.470    2.881   46.7   14.5   287   11.2 
2025-11-03 00:00 UT   11 25 08.7   -03 56 45     3.462    2.883   47.3   14.7   287   11.2 
2025-11-04 00:00 UT   11 26 18.9   -04 07 14     3.453    2.884   48.0   14.8   287   11.2 
2025-11-05 00:00 UT   11 27 28.7   -04 17 41     3.444    2.886   48.6   14.9   287   11.2 
2025-11-06 00:00 UT   11 28 38.1   -04 28 08     3.435    2.888   49.3   15.1   287   11.2 
2025-11-07 00:00 UT   11 29 47.1   -04 38 34     3.425    2.889   50.0   15.2   287   11.2 
2025-11-08 00:00 UT   11 30 55.6   -04 48 58     3.416    2.891   50.6   15.4   287   11.2 
2025-11-09 00:00 UT   11 32 03.7   -04 59 22     3.407    2.892   51.3   15.5   288   11.2 
2025-11-10 00:00 UT   11 33 11.3   -05 09 45     3.397    2.894   52.0   15.6   288   11.2 
2025-11-11 00:00 UT   11 34 18.4   -05 20 07     3.387    2.895   52.6   15.8   288   11.2 
2025-11-12 00:00 UT   11 35 25.1   -05 30 28     3.378    2.897   53.3   15.9   288   11.2 
2025-11-13 00:00 UT   11 36 31.3   -05 40 47     3.368    2.898   54.0   16.0   288   11.2 
2025-11-14 00:00 UT   11 37 37.1   -05 51 06     3.358    2.900   54.7   16.2   288   11.2 

    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.