(15) Eunomia
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Today	17 Jun 2025	10.9	2.629 AU	3.426 AU	07h59m	+17°48'	32.7°	12.0°
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)                : 0.1877168
            a (Semimajor axis)              : 2.6432479
            i (Inclination)                 : 11.76051
            Ω (Longitude of ascending node) : 292.87955
            ω (Argument of perihelion)      : 98.63439
            M (Mean anomaly)                : 67.71314
            Epoch                           : 2025 May 05

            L (Longitude of perihelion)     : 211.69620
            B (Latitude of perihelion)      : 11.62535
            P (Orbital period in years)     : 4.30            
        

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
2025-06-17 00:00 UT   07 59 17.9   +17 48 58     3.426    2.629   32.7   12.0   106   10.9 
2025-06-17 04:13 UT   07 59 35.6   +17 47 48     3.428    2.629   32.6   12.0   106   10.9 
2025-06-18 00:00 UT   08 00 58.2   +17 42 21     3.435    2.631   32.1   11.9   106   10.9 
2025-06-19 00:00 UT   08 02 38.5   +17 35 40     3.444    2.633   31.6   11.7   106   10.9 
2025-06-20 00:00 UT   08 04 18.7   +17 28 56     3.452    2.635   31.1   11.5   107   10.9 
2025-06-21 00:00 UT   08 05 58.8   +17 22 08     3.461    2.637   30.5   11.3   107   10.9 
2025-06-22 00:00 UT   08 07 38.9   +17 15 17     3.469    2.639   30.0   11.1   107   10.9 
2025-06-23 00:00 UT   08 09 18.9   +17 08 22     3.478    2.641   29.5   10.9   107   10.9 
2025-06-24 00:00 UT   08 10 58.9   +17 01 24     3.486    2.643   28.9   10.7   108   10.9 
2025-06-25 00:00 UT   08 12 38.7   +16 54 22     3.494    2.645   28.4   10.5   108   10.9 
2025-06-26 00:00 UT   08 14 18.5   +16 47 17     3.502    2.647   27.9   10.3   108   10.9 
2025-06-27 00:00 UT   08 15 58.2   +16 40 09     3.510    2.649   27.3   10.1   109   10.9 
2025-06-28 00:00 UT   08 17 37.8   +16 32 57     3.518    2.651   26.8   10.0   109   10.9 
2025-06-29 00:00 UT   08 19 17.3   +16 25 42     3.526    2.653   26.3    9.8   109   10.9 
2025-06-30 00:00 UT   08 20 56.7   +16 18 23     3.533    2.655   25.7    9.6   110   10.9 
2025-07-01 00:00 UT   08 22 36.0   +16 11 01     3.541    2.657   25.2    9.4   110   10.9 
2025-07-02 00:00 UT   08 24 15.2   +16 03 36     3.548    2.659   24.7    9.2   110   10.9 
2025-07-03 00:00 UT   08 25 54.3   +15 56 07     3.556    2.661   24.1    9.0   111   10.9 
2025-07-04 00:00 UT   08 27 33.2   +15 48 35     3.563    2.662   23.6    8.8   111   10.9 
2025-07-05 00:00 UT   08 29 12.1   +15 41 00     3.570    2.664   23.1    8.6   112   10.9 
2025-07-06 00:00 UT   08 30 50.8   +15 33 22     3.577    2.666   22.6    8.4   112   10.9 
2025-07-07 00:00 UT   08 32 29.4   +15 25 41     3.583    2.668   22.0    8.2   112   10.9 

    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.