(57) Mnemosyne
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Today	28 Mar 2026	13.1	3.404 AU	3.406 AU	19h01m	-08°18'	81.5°	16.9°
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) : 198.89335
            ω (Argument of perihelion)      : 210.98858
            M (Mean anomaly)                : 205.17127
            Epoch                           : 2025 Nov 21

            L (Longitude of perihelion)     : 228.98536
            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
2026-03-28 00:00 UT   19 01 46.1   -08 18 01     3.406    3.404   81.5   16.9   266   13.1 
2026-03-28 04:39 UT   19 01 54.9   -08 16 55     3.403    3.404   81.6   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 
2026-04-06 00:00 UT   19 08 00.5   -07 25 60     3.275    3.398   88.4   17.1   264   13.1 
2026-04-07 00:00 UT   19 08 37.8   -07 20 05     3.260    3.397   89.2   17.1   263   13.1 
2026-04-08 00:00 UT   19 09 14.1   -07 14 10     3.246    3.397   90.0   17.1   263   13.0 
2026-04-09 00:00 UT   19 09 49.6   -07 08 13     3.231    3.396   90.8   17.1   263   13.0 
2026-04-10 00:00 UT   19 10 24.2   -07 02 15     3.217    3.395   91.6   17.2   262   13.0 
2026-04-11 00:00 UT   19 10 57.8   -06 56 16     3.202    3.395   92.4   17.2   262   13.0 
2026-04-12 00:00 UT   19 11 30.5   -06 50 16     3.187    3.394   93.2   17.1   262   13.0 
2026-04-13 00:00 UT   19 12 02.3   -06 44 15     3.173    3.393   94.0   17.1   262   13.0 
2026-04-14 00:00 UT   19 12 33.0   -06 38 14     3.158    3.392   94.8   17.1   261   13.0 
2026-04-15 00:00 UT   19 13 02.8   -06 32 12     3.144    3.392   95.6   17.1   261   13.0 
2026-04-16 00:00 UT   19 13 31.6   -06 26 09     3.129    3.391   96.4   17.1   261   13.0 
2026-04-17 00:00 UT   19 13 59.5   -06 20 06     3.115    3.390   97.2   17.1   260   13.0 
2026-04-18 00:00 UT   19 14 26.3   -06 14 03     3.100    3.390   98.0   17.1   260   12.9 
2026-04-19 00:00 UT   19 14 52.0   -06 07 60     3.086    3.389   98.8   17.0   260   12.9 
2026-04-20 00:00 UT   19 15 16.8   -06 01 56     3.072    3.388   99.7   17.0   260   12.9 
2026-04-21 00:00 UT   19 15 40.5   -05 55 53     3.058    3.388  100.5   17.0   259   12.9 
2026-04-22 00:00 UT   19 16 03.2   -05 49 49     3.043    3.387  101.3   16.9   259   12.9 
2026-04-23 00:00 UT   19 16 24.8   -05 43 46     3.029    3.386  102.1   16.9   259   12.9 
2026-04-24 00:00 UT   19 16 45.4   -05 37 44     3.015    3.385  103.0   16.8   258   12.9 
2026-04-25 00:00 UT   19 17 04.9   -05 31 41     3.001    3.385  103.8   16.8   258   12.9 
2026-04-26 00:00 UT   19 17 23.3   -05 25 40     2.987    3.384  104.6   16.7   258   12.8 
2026-04-27 00:00 UT   19 17 40.7   -05 19 39     2.973    3.383  105.5   16.7   257   12.8 

    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.