(31) Euphrosyne
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Today	18 Jul 2025	13.1	3.641 AU	3.297 AU	14h02m	-25°05'	101.6°	15.9°
Opposition	25 Jun 2026	12.6	3.841 AU	2.941 AU	18h26m	-55°13'	148.1°	8.0°

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 Euphrosyne are:

            e (Eccentricity)                : 0.2159829
            a (Semimajor axis)              : 3.1610744
            i (Inclination)                 : 26.31587
            Ω (Longitude of ascending node) : 30.80053
            ω (Argument of perihelion)      : 61.92662
            M (Mean anomaly)                : 112.87325
            Epoch                           : 2025 May 05

            L (Longitude of perihelion)     : 90.04708
            B (Latitude of perihelion)      : 23.02676
            P (Orbital period in years)     : 5.62            
        

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
2025-07-18 00:00 UT   14 02 22.9   -25 05 11     3.297    3.641  101.6   15.9   108   13.1 
2025-07-18 22:56 UT   14 02 39.1   -25 06 55     3.312    3.642  100.8   15.9   108   13.1 
2025-07-19 00:00 UT   14 02 39.8   -25 06 60     3.313    3.642  100.8   15.9   108   13.1 
2025-07-20 00:00 UT   14 02 57.8   -25 08 53     3.328    3.643   99.9   15.9   108   13.1 
2025-07-21 00:00 UT   14 03 16.8   -25 10 50     3.344    3.645   99.1   16.0   109   13.1 
2025-07-22 00:00 UT   14 03 36.8   -25 12 52     3.359    3.646   98.2   16.0   109   13.1 
2025-07-23 00:00 UT   14 03 57.8   -25 14 57     3.375    3.647   97.4   16.0   109   13.1 
2025-07-24 00:00 UT   14 04 19.8   -25 17 07     3.391    3.649   96.5   16.1   109   13.2 
2025-07-25 00:00 UT   14 04 42.8   -25 19 21     3.407    3.650   95.7   16.1   109   13.2 
2025-07-26 00:00 UT   14 05 06.8   -25 21 39     3.422    3.651   94.8   16.1   109   13.2 
2025-07-27 00:00 UT   14 05 31.8   -25 24 01     3.438    3.652   94.0   16.1   109   13.2 
2025-07-28 00:00 UT   14 05 57.7   -25 26 27     3.454    3.654   93.2   16.1   110   13.2 
2025-07-29 00:00 UT   14 06 24.6   -25 28 57     3.470    3.655   92.4   16.1   110   13.2 
2025-07-30 00:00 UT   14 06 52.4   -25 31 31     3.485    3.656   91.5   16.1   110   13.2 
2025-07-31 00:00 UT   14 07 21.2   -25 34 09     3.501    3.657   90.7   16.1   110   13.2 
2025-08-01 00:00 UT   14 07 50.8   -25 36 51     3.517    3.659   89.9   16.1   110   13.2 
2025-08-02 00:00 UT   14 08 21.4   -25 39 36     3.533    3.660   89.1   16.1   110   13.2 
2025-08-03 00:00 UT   14 08 52.8   -25 42 26     3.548    3.661   88.3   16.1   110   13.3 
2025-08-04 00:00 UT   14 09 25.1   -25 45 19     3.564    3.662   87.5   16.1   111   13.3 
2025-08-05 00:00 UT   14 09 58.3   -25 48 16     3.580    3.664   86.7   16.0   111   13.3 
2025-08-06 00:00 UT   14 10 32.3   -25 51 17     3.595    3.665   85.9   16.0   111   13.3 
2025-08-07 00:00 UT   14 11 07.1   -25 54 21     3.611    3.666   85.1   16.0   111   13.3 
2025-08-08 00:00 UT   14 11 42.8   -25 57 29     3.627    3.667   84.3   16.0   111   13.3 
2025-08-09 00:00 UT   14 12 19.3   -26 00 40     3.642    3.668   83.5   15.9   111   13.3 
2025-08-10 00:00 UT   14 12 56.6   -26 03 55     3.658    3.670   82.7   15.9   111   13.3 
2025-08-11 00:00 UT   14 13 34.7   -26 07 14     3.674    3.671   81.9   15.9   112   13.3 
2025-08-12 00:00 UT   14 14 13.6   -26 10 35     3.689    3.672   81.1   15.8   112   13.3 
2025-08-13 00:00 UT   14 14 53.3   -26 14 00     3.705    3.673   80.4   15.8   112   13.3 
2025-08-14 00:00 UT   14 15 33.7   -26 17 29     3.720    3.674   79.6   15.7   112   13.4 
2025-08-15 00:00 UT   14 16 14.9   -26 21 00     3.735    3.676   78.8   15.7   112   13.4 
2025-08-16 00:00 UT   14 16 56.9   -26 24 35     3.751    3.677   78.0   15.6   112   13.4 
2025-08-17 00:00 UT   14 17 39.6   -26 28 13     3.766    3.678   77.3   15.6   112   13.4 

    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.