(386) Siegena
ephemeris date magn radius delta ra dec elong phase
Today4 May 202613.32.697 AU3.284 AU05h53m+08°41'46.9°15.8°
Opposition1 Mar 202712.13.180 AU2.191 AU10h46m+04°32'176.8°1.0°
(386) Siegena - 2026-05-04
astro.vanbuitenen.nl


 
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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 Siegena are:

            e (Eccentricity)                : 0.1692815
            a (Semimajor axis)              : 2.8973697
            i (Inclination)                 : 20.21922
            Ω (Longitude of ascending node) : 166.61220
            ω (Argument of perihelion)      : 221.15379
            M (Mean anomaly)                : 24.30067
            Epoch                           : 2025 Nov 21

            L (Longitude of perihelion)     : 205.96913
            B (Latitude of perihelion)      : -13.14651
            P (Orbital period in years)     : 4.93            
        

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
2026-05-04 00:00 UT   05 53 06.2   +08 41 02     3.284    2.697   46.9   15.8   104   13.3 
2026-05-04 21:22 UT   05 54 31.3   +08 44 58     3.293    2.699   46.4   15.7   104   13.3 
2026-05-05 00:00 UT   05 54 41.8   +08 45 26     3.294    2.699   46.4   15.7   104   13.3 
2026-05-06 00:00 UT   05 56 17.7   +08 49 44     3.305    2.701   45.8   15.5   104   13.3 
2026-05-07 00:00 UT   05 57 53.9   +08 53 56     3.315    2.702   45.3   15.4   105   13.3 
2026-05-08 00:00 UT   05 59 30.2   +08 58 01     3.326    2.704   44.7   15.2   105   13.4 
2026-05-09 00:00 UT   06 01 06.8   +09 02 00     3.336    2.706   44.2   15.1   105   13.4 
2026-05-10 00:00 UT   06 02 43.6   +09 05 53     3.347    2.707   43.7   14.9   106   13.4 
2026-05-11 00:00 UT   06 04 20.6   +09 09 40     3.357    2.709   43.1   14.8   106   13.4 
2026-05-12 00:00 UT   06 05 57.8   +09 13 21     3.367    2.711   42.6   14.6   107   13.4 
2026-05-13 00:00 UT   06 07 35.2   +09 16 55     3.377    2.713   42.1   14.4   107   13.4 
2026-05-14 00:00 UT   06 09 12.8   +09 20 24     3.387    2.714   41.5   14.3   107   13.4 
2026-05-15 00:00 UT   06 10 50.6   +09 23 46     3.397    2.716   41.0   14.1   108   13.4 
2026-05-16 00:00 UT   06 12 28.6   +09 27 02     3.406    2.718   40.5   14.0   108   13.4 
2026-05-17 00:00 UT   06 14 06.7   +09 30 11     3.416    2.719   39.9   13.8   109   13.4 
2026-05-18 00:00 UT   06 15 45.0   +09 33 15     3.426    2.721   39.4   13.6   109   13.4 
2026-05-19 00:00 UT   06 17 23.4   +09 36 12     3.435    2.723   38.9   13.5   109   13.4 
2026-05-20 00:00 UT   06 19 02.0   +09 39 03     3.444    2.724   38.4   13.3   110   13.4 
2026-05-21 00:00 UT   06 20 40.7   +09 41 48     3.454    2.726   37.8   13.2   110   13.4 
2026-05-22 00:00 UT   06 22 19.6   +09 44 27     3.463    2.728   37.3   13.0   111   13.4 
2026-05-23 00:00 UT   06 23 58.6   +09 46 60     3.472    2.730   36.8   12.8   111   13.4 
2026-05-24 00:00 UT   06 25 37.7   +09 49 27     3.481    2.731   36.3   12.7   112   13.4 


    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.