(31) Euphrosyne
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Today	21 Apr 2026	13.2	3.842 AU	3.425 AU	19h03m	-47°48'	107.0°	14.5°
Opposition	25 Jun 2026	12.7	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) : 30.79589
            ω (Argument of perihelion)      : 61.97075
            M (Mean anomaly)                : 147.89313
            Epoch                           : 2025 Nov 21

            L (Longitude of perihelion)     : 90.08994
            B (Latitude of perihelion)      : 23.03363
            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
2026-04-21 00:00 UT   19 03 21.8   -47 48 33     3.425    3.842  107.0   14.5   271   13.2 
2026-04-21 17:56 UT   19 03 35.1   -47 54 19     3.416    3.842  107.7   14.4   272   13.2 
2026-04-22 00:00 UT   19 03 39.4   -47 56 16     3.413    3.842  107.9   14.4   272   13.2 
2026-04-23 00:00 UT   19 03 55.6   -48 04 02     3.400    3.842  108.7   14.4   272   13.2 
2026-04-24 00:00 UT   19 04 10.3   -48 11 50     3.388    3.842  109.5   14.3   273   13.2 
2026-04-25 00:00 UT   19 04 23.6   -48 19 41     3.375    3.842  110.3   14.2   273   13.2 
2026-04-26 00:00 UT   19 04 35.3   -48 27 34     3.363    3.843  111.2   14.1   274   13.2 
2026-04-27 00:00 UT   19 04 45.6   -48 35 29     3.351    3.843  112.0   14.1   274   13.2 
2026-04-28 00:00 UT   19 04 54.3   -48 43 27     3.339    3.843  112.8   14.0   275   13.2 
2026-04-29 00:00 UT   19 05 01.6   -48 51 27     3.327    3.843  113.6   13.9   275   13.2 
2026-04-30 00:00 UT   19 05 07.2   -48 59 28     3.315    3.843  114.5   13.8   276   13.1 
2026-05-01 00:00 UT   19 05 11.3   -49 07 32     3.303    3.843  115.3   13.7   276   13.1 
2026-05-02 00:00 UT   19 05 13.8   -49 15 37     3.292    3.843  116.1   13.6   277   13.1 
2026-05-03 00:00 UT   19 05 14.7   -49 23 43     3.280    3.843  116.9   13.5   278   13.1 
2026-05-04 00:00 UT   19 05 14.0   -49 31 50     3.269    3.843  117.7   13.4   278   13.1 
2026-05-05 00:00 UT   19 05 11.6   -49 39 59     3.258    3.843  118.6   13.3   279   13.1 
2026-05-06 00:00 UT   19 05 07.6   -49 48 09     3.247    3.844  119.4   13.2   279   13.1 
2026-05-07 00:00 UT   19 05 01.9   -49 56 19     3.236    3.844  120.2   13.1   280   13.1 
2026-05-08 00:00 UT   19 04 54.6   -50 04 30     3.225    3.844  121.0   13.0   281   13.1 
2026-05-09 00:00 UT   19 04 45.5   -50 12 41     3.215    3.844  121.8   12.9   282   13.0 
2026-05-10 00:00 UT   19 04 34.7   -50 20 53     3.204    3.844  122.6   12.8   282   13.0 
2026-05-11 00:00 UT   19 04 22.2   -50 29 04     3.194    3.844  123.4   12.7   283   13.0 
2026-05-12 00:00 UT   19 04 08.0   -50 37 14     3.184    3.844  124.2   12.5   284   13.0 
2026-05-13 00:00 UT   19 03 52.0   -50 45 25     3.174    3.844  125.0   12.4   285   13.0 
2026-05-14 00:00 UT   19 03 34.3   -50 53 34     3.164    3.844  125.8   12.3   286   13.0 
2026-05-15 00:00 UT   19 03 14.8   -51 01 42     3.154    3.844  126.6   12.2   286   13.0 
2026-05-16 00:00 UT   19 02 53.5   -51 09 48     3.145    3.844  127.4   12.1   287   13.0 
2026-05-17 00:00 UT   19 02 30.4   -51 17 53     3.136    3.844  128.2   11.9   288   13.0 
2026-05-18 00:00 UT   19 02 05.6   -51 25 55     3.126    3.844  129.0   11.8   289   12.9 
2026-05-19 00:00 UT   19 01 39.0   -51 33 56     3.118    3.844  129.8   11.7   290   12.9 
2026-05-20 00:00 UT   19 01 10.6   -51 41 53     3.109    3.844  130.5   11.5   291   12.9 
2026-05-21 00:00 UT   19 00 40.4   -51 49 47     3.100    3.844  131.3   11.4   292   12.9 

    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.