(15) Eunomia
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Today	2 Oct 2025	11.1	2.830 AU	3.681 AU	10h44m	+01°41'	27.4°	9.4°
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. A more printer-friendly version of the same chart can be found below.

Ephemerides:

Date       Time       RA (2000)    DEC (2000)    delta   radius  elong  phase   PA    magn
2025-10-02 00:00 UT   10 44 27.7   +01 41 44     3.681    2.830   27.4    9.4   281   11.1 
2025-10-02 23:31 UT   10 45 47.3   +01 31 23     3.676    2.831   27.9    9.5   281   11.1 
2025-10-03 00:00 UT   10 45 48.9   +01 31 11     3.676    2.831   28.0    9.5   281   11.1 
2025-10-04 00:00 UT   10 47 09.8   +01 20 36     3.671    2.833   28.5    9.7   281   11.1 
2025-10-05 00:00 UT   10 48 30.5   +01 10 02     3.666    2.835   29.1    9.9   282   11.1 
2025-10-06 00:00 UT   10 49 50.8   +00 59 27     3.661    2.837   29.7   10.1   282   11.2 
2025-10-07 00:00 UT   10 51 10.9   +00 48 52     3.656    2.838   30.3   10.2   282   11.2 
2025-10-08 00:00 UT   10 52 30.6   +00 38 17     3.650    2.840   30.9   10.4   282   11.2 
2025-10-09 00:00 UT   10 53 50.1   +00 27 41     3.644    2.842   31.6   10.6   283   11.2 
2025-10-10 00:00 UT   10 55 09.3   +00 17 05     3.639    2.843   32.2   10.8   283   11.2 
2025-10-11 00:00 UT   10 56 28.2   +00 06 29     3.633    2.845   32.8   10.9   283   11.2 
2025-10-12 00:00 UT   10 57 46.7   +00 04 08     3.627    2.847   33.4   11.1   283   11.2 
2025-10-13 00:00 UT   10 59 05.0   +00 14 44     3.621    2.848   34.0   11.3   283   11.2 
2025-10-14 00:00 UT   11 00 22.9   +00 25 21     3.614    2.850   34.6   11.5   284   11.2 
2025-10-15 00:00 UT   11 01 40.6   +00 35 57     3.608    2.852   35.2   11.6   284   11.2 
2025-10-16 00:00 UT   11 02 57.9   +00 46 34     3.601    2.853   35.8   11.8   284   11.2 
2025-10-17 00:00 UT   11 04 14.9   +00 57 11     3.595    2.855   36.5   12.0   284   11.2 
2025-10-18 00:00 UT   11 05 31.5   -01 07 47     3.588    2.857   37.1   12.1   284   11.2 
2025-10-19 00:00 UT   11 06 47.8   -01 18 24     3.581    2.858   37.7   12.3   285   11.2 
2025-10-20 00:00 UT   11 08 03.8   -01 29 00     3.574    2.860   38.3   12.5   285   11.2 
2025-10-21 00:00 UT   11 09 19.5   -01 39 36     3.567    2.862   39.0   12.6   285   11.2 
2025-10-22 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 

    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.