(31) Euphrosyne
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Today	29 Nov 2025	13.4	3.778 AU	4.729 AU	16h17m	-35°06'	13.7°	3.5°
Opposition	25 Jun 2026	12.6	3.842 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)                : 0.2159207
            a (Semimajor axis)              : 3.1615053
            i (Inclination)                 : 26.31223
            Ω (Longitude of ascending node) : 30.79590
            ω (Argument of perihelion)      : 61.97074
            M (Mean anomaly)                : 147.89313
            Epoch                           : 2025 Nov 21

            L (Longitude of perihelion)     : 90.08994
            B (Latitude of perihelion)      : 23.03362
            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.

Ephemerides:

Date       Time       RA (2000)    DEC (2000)    delta   radius  elong  phase   PA    magn
2025-11-29 00:00 UT   16 17 21.0   -35 06 43     4.729    3.778   13.7    3.5   182   13.4 
2025-11-29 14:38 UT   16 18 13.0   -35 09 50     4.730    3.779   13.7    3.5   184   13.4 
2025-11-30 00:00 UT   16 18 46.3   -35 11 50     4.730    3.779   13.7    3.5   185   13.4 
2025-12-01 00:00 UT   16 20 11.7   -35 16 57     4.731    3.780   13.6    3.5   188   13.4 
2025-12-02 00:00 UT   16 21 37.2   -35 22 03     4.731    3.780   13.7    3.5   190   13.4 
2025-12-03 00:00 UT   16 23 02.8   -35 27 08     4.732    3.781   13.7    3.5   193   13.4 
2025-12-04 00:00 UT   16 24 28.5   -35 32 13     4.732    3.782   13.8    3.6   196   13.4 
2025-12-05 00:00 UT   16 25 54.4   -35 37 17     4.732    3.783   13.9    3.6   199   13.4 
2025-12-06 00:00 UT   16 27 20.3   -35 42 19     4.731    3.783   14.1    3.6   201   13.4 
2025-12-07 00:00 UT   16 28 46.4   -35 47 21     4.731    3.784   14.3    3.7   204   13.4 
2025-12-08 00:00 UT   16 30 12.5   -35 52 22     4.730    3.785   14.5    3.7   207   13.4 
2025-12-09 00:00 UT   16 31 38.8   -35 57 23     4.729    3.785   14.8    3.8   209   13.4 
2025-12-10 00:00 UT   16 33 05.1   -36 02 22     4.728    3.786   15.1    3.9   211   13.4 
2025-12-11 00:00 UT   16 34 31.5   -36 07 21     4.727    3.787   15.4    4.0   214   13.4 
2025-12-12 00:00 UT   16 35 58.0   -36 12 19     4.726    3.788   15.7    4.0   216   13.4 
2025-12-13 00:00 UT   16 37 24.5   -36 17 16     4.724    3.788   16.1    4.1   218   13.4 
2025-12-14 00:00 UT   16 38 51.1   -36 22 12     4.723    3.789   16.5    4.2   220   13.5 
2025-12-15 00:00 UT   16 40 17.8   -36 27 07     4.721    3.790   16.9    4.3   222   13.5 
2025-12-16 00:00 UT   16 41 44.5   -36 32 02     4.719    3.790   17.3    4.4   224   13.5 
2025-12-17 00:00 UT   16 43 11.3   -36 36 56     4.716    3.791   17.8    4.5   225   13.5 
2025-12-18 00:00 UT   16 44 38.1   -36 41 49     4.714    3.792   18.2    4.7   227   13.5 
2025-12-19 00:00 UT   16 46 04.9   -36 46 41     4.711    3.792   18.7    4.8   229   13.5 
2025-12-20 00:00 UT   16 47 31.7   -36 51 32     4.708    3.793   19.2    4.9   230   13.5 
2025-12-21 00:00 UT   16 48 58.6   -36 56 22     4.705    3.794   19.7    5.0   231   13.5 
2025-12-22 00:00 UT   16 50 25.5   -37 01 12     4.702    3.794   20.2    5.1   233   13.5 
2025-12-23 00:00 UT   16 51 52.3   -37 06 01     4.699    3.795   20.7    5.3   234   13.5 
2025-12-24 00:00 UT   16 53 19.2   -37 10 49     4.695    3.796   21.3    5.4   235   13.5 
2025-12-25 00:00 UT   16 54 46.0   -37 15 37     4.692    3.796   21.8    5.5   236   13.5 
2025-12-26 00:00 UT   16 56 12.8   -37 20 23     4.688    3.797   22.4    5.7   237   13.5 
2025-12-27 00:00 UT   16 57 39.6   -37 25 09     4.684    3.798   23.0    5.8   238   13.5 

    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.