(57) Mnemosyne
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Today	6 Mar 2026	13.3	3.418 AU	3.716 AU	18h42m	-10°12'	65.1°	15.3°
Opposition	6 Jul 2026	11.9	3.327 AU	2.361 AU	18h53m	-01°06'	158.3°	6.5°

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 Mnemosyne are:

            e (Eccentricity)                : 0.1080406
            a (Semimajor axis)              : 3.1557907
            i (Inclination)                 : 15.23097
            Ω (Longitude of ascending node) : 198.89334
            ω (Argument of perihelion)      : 210.98858
            M (Mean anomaly)                : 205.17127
            Epoch                           : 2025 Nov 21

            L (Longitude of perihelion)     : 228.98535
            B (Latitude of perihelion)      : -7.77372
            P (Orbital period in years)     : 5.61            
        

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
2026-03-06 00:00 UT   18 42 12.1   -10 12 32     3.716    3.418   65.1   15.3   272   13.3 
2026-03-06 08:28 UT   18 42 33.5   -10 10 53     3.711    3.418   65.3   15.3   272   13.3 
2026-03-07 00:00 UT   18 43 12.4   -10 07 50     3.702    3.418   65.8   15.4   272   13.3 
2026-03-08 00:00 UT   18 44 12.2   -10 03 04     3.689    3.417   66.5   15.5   271   13.3 
2026-03-09 00:00 UT   18 45 11.3   -09 58 15     3.675    3.416   67.3   15.5   271   13.3 
2026-03-10 00:00 UT   18 46 09.8   -09 53 23     3.661    3.416   68.0   15.6   271   13.3 
2026-03-11 00:00 UT   18 47 07.7   -09 48 28     3.648    3.415   68.7   15.7   270   13.3 
2026-03-12 00:00 UT   18 48 04.9   -09 43 30     3.634    3.414   69.5   15.8   270   13.3 
2026-03-13 00:00 UT   18 49 01.5   -09 38 29     3.620    3.414   70.2   15.9   270   13.3 
2026-03-14 00:00 UT   18 49 57.5   -09 33 25     3.606    3.413   70.9   16.0   270   13.2 
2026-03-15 00:00 UT   18 50 52.8   -09 28 18     3.592    3.413   71.7   16.1   269   13.2 
2026-03-16 00:00 UT   18 51 47.4   -09 23 09     3.578    3.412   72.4   16.1   269   13.2 
2026-03-17 00:00 UT   18 52 41.3   -09 17 56     3.564    3.411   73.2   16.2   269   13.2 
2026-03-18 00:00 UT   18 53 34.5   -09 12 42     3.550    3.411   73.9   16.3   269   13.2 
2026-03-19 00:00 UT   18 54 27.0   -09 07 24     3.536    3.410   74.7   16.4   268   13.2 
2026-03-20 00:00 UT   18 55 18.8   -09 02 04     3.521    3.409   75.4   16.4   268   13.2 
2026-03-21 00:00 UT   18 56 09.9   -08 56 42     3.507    3.409   76.2   16.5   268   13.2 
2026-03-22 00:00 UT   18 57 00.2   -08 51 17     3.493    3.408   76.9   16.5   268   13.2 
2026-03-23 00:00 UT   18 57 49.8   -08 45 50     3.478    3.407   77.7   16.6   267   13.2 
2026-03-24 00:00 UT   18 58 38.6   -08 40 20     3.464    3.407   78.4   16.7   267   13.2 
2026-03-25 00:00 UT   18 59 26.6   -08 34 48     3.450    3.406   79.2   16.7   267   13.2 
2026-03-26 00:00 UT   19 00 13.9   -08 29 15     3.435    3.405   79.9   16.8   266   13.2 
2026-03-27 00:00 UT   19 01 00.4   -08 23 39     3.421    3.405   80.7   16.8   266   13.2 
2026-03-28 00:00 UT   19 01 46.1   -08 18 01     3.406    3.404   81.5   16.9   266   13.1 
2026-03-29 00:00 UT   19 02 31.0   -08 12 21     3.392    3.403   82.2   16.9   266   13.1 
2026-03-30 00:00 UT   19 03 15.1   -08 06 39     3.377    3.403   83.0   16.9   265   13.1 
2026-03-31 00:00 UT   19 03 58.4   -08 00 56     3.363    3.402   83.8   17.0   265   13.1 
2026-04-01 00:00 UT   19 04 40.9   -07 55 10     3.348    3.401   84.5   17.0   265   13.1 
2026-04-02 00:00 UT   19 05 22.5   -07 49 23     3.333    3.401   85.3   17.0   265   13.1 
2026-04-03 00:00 UT   19 06 03.3   -07 43 35     3.319    3.400   86.1   17.1   264   13.1 
2026-04-04 00:00 UT   19 06 43.2   -07 37 44     3.304    3.399   86.9   17.1   264   13.1 
2026-04-05 00:00 UT   19 07 22.3   -07 31 53     3.290    3.399   87.6   17.1   264   13.1 

    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.