(200) Dynamene
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Today	17 Sep 2025	13.3	2.387 AU	2.358 AU	06h21m	+30°04'	79.4°	24.5°
Opposition	30 Dec 2025	11.6	2.466 AU	1.488 AU	06h42m	+31°15'	171.8°	3.3°

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 Dynamene are:

            e (Eccentricity)                : 0.1331217
            a (Semimajor axis)              : 2.7365425
            i (Inclination)                 : 6.89994
            Ω (Longitude of ascending node) : 324.23719
            ω (Argument of perihelion)      : 87.18516
            M (Mean anomaly)                : 344.72035
            Epoch                           : 2025 May 05

            L (Longitude of perihelion)     : 51.40185
            B (Latitude of perihelion)      : 6.89157
            P (Orbital period in years)     : 4.53            
        

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
2025-09-17 00:00 UT   06 21 31.7   +30 04 30     2.358    2.387   79.4   24.5   273   13.3 
2025-09-17 05:37 UT   06 21 52.9   +30 04 41     2.355    2.387   79.5   24.5   273   13.3 
2025-09-18 00:00 UT   06 23 02.0   +30 05 14     2.346    2.387   80.0   24.5   273   13.3 
2025-09-19 00:00 UT   06 24 31.5   +30 05 56     2.335    2.388   80.7   24.5   274   13.3 
2025-09-20 00:00 UT   06 25 60.0   +30 06 36     2.323    2.388   81.3   24.6   274   13.3 
2025-09-21 00:00 UT   06 27 27.6   +30 07 14     2.312    2.389   82.0   24.6   274   13.3 
2025-09-22 00:00 UT   06 28 54.2   +30 07 50     2.300    2.389   82.7   24.6   274   13.3 
2025-09-23 00:00 UT   06 30 19.8   +30 08 25     2.288    2.390   83.3   24.7   274   13.3 
2025-09-24 00:00 UT   06 31 44.4   +30 08 58     2.277    2.390   84.0   24.7   274   13.3 
2025-09-25 00:00 UT   06 33 08.0   +30 09 30     2.265    2.391   84.7   24.7   274   13.3 
2025-09-26 00:00 UT   06 34 30.5   +30 10 01     2.254    2.391   85.3   24.7   274   13.3 
2025-09-27 00:00 UT   06 35 52.0   +30 10 31     2.242    2.392   86.0   24.7   274   13.2 
2025-09-28 00:00 UT   06 37 12.4   +30 10 60     2.230    2.392   86.7   24.7   274   13.2 
2025-09-29 00:00 UT   06 38 31.7   +30 11 28     2.219    2.393   87.4   24.7   274   13.2 
2025-09-30 00:00 UT   06 39 49.9   +30 11 55     2.207    2.393   88.1   24.7   274   13.2 
2025-10-01 00:00 UT   06 41 07.0   +30 12 21     2.195    2.394   88.8   24.7   274   13.2 
2025-10-02 00:00 UT   06 42 22.9   +30 12 47     2.184    2.394   89.5   24.7   274   13.2 
2025-10-03 00:00 UT   06 43 37.6   +30 13 12     2.172    2.395   90.2   24.7   274   13.2 
2025-10-04 00:00 UT   06 44 51.2   +30 13 36     2.160    2.395   90.9   24.7   274   13.2 
2025-10-05 00:00 UT   06 46 03.5   +30 14 01     2.149    2.396   91.6   24.7   274   13.2 
2025-10-06 00:00 UT   06 47 14.7   +30 14 25     2.137    2.396   92.4   24.6   274   13.1 
2025-10-07 00:00 UT   06 48 24.5   +30 14 49     2.125    2.397   93.1   24.6   274   13.1 
2025-10-08 00:00 UT   06 49 33.1   +30 15 14     2.114    2.398   93.8   24.6   274   13.1 
2025-10-09 00:00 UT   06 50 40.4   +30 15 38     2.102    2.398   94.6   24.5   274   13.1 
2025-10-10 00:00 UT   06 51 46.4   +30 16 03     2.091    2.399   95.3   24.5   274   13.1 
2025-10-11 00:00 UT   06 52 51.1   +30 16 28     2.079    2.399   96.0   24.4   274   13.1 
2025-10-12 00:00 UT   06 53 54.4   +30 16 53     2.068    2.400   96.8   24.4   274   13.1 
2025-10-13 00:00 UT   06 54 56.3   +30 17 19     2.056    2.401   97.6   24.3   274   13.1 
2025-10-14 00:00 UT   06 55 56.8   +30 17 46     2.044    2.401   98.3   24.3   274   13.0 
2025-10-15 00:00 UT   06 56 55.9   +30 18 13     2.033    2.402   99.1   24.2   274   13.0 
2025-10-16 00:00 UT   06 57 53.5   +30 18 41     2.021    2.402   99.9   24.1   274   13.0 
2025-10-17 00:00 UT   06 58 49.6   +30 19 10     2.010    2.403  100.7   24.1   274   13.0 

    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.