(386) Siegena
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Today	22 Sep 2026	13.6	2.940 AU	3.711 AU	09h37m	+04°47'	34.6°	11.2°
Opposition	1 Mar 2027	12.1	3.182 AU	2.192 AU	10h46m	+04°33'	176.8°	1.0°

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 Siegena are:

            e (Eccentricity)                : 0.1696377
            a (Semimajor axis)              : 2.8990091
            i (Inclination)                 : 20.22161
            Ω (Longitude of ascending node) : 166.58802
            ω (Argument of perihelion)      : 221.29876
            M (Mean anomaly)                : 64.12235
            Epoch                           : 2026 Jun 09

            L (Longitude of perihelion)     : 206.08800
            B (Latitude of perihelion)      : -13.18673
            P (Orbital period in years)     : 4.94            
        

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
2026-09-22 00:00 UT   09 37 35.9   +04 47 13     3.711    2.940   34.6   11.2   276   13.6 
2026-09-22 04:18 UT   09 37 50.6   +04 46 13     3.710    2.940   34.7   11.2   276   13.6 
2026-09-23 00:00 UT   09 38 58.1   +04 41 38     3.705    2.942   35.2   11.3   276   13.6 
2026-09-24 00:00 UT   09 40 20.0   +04 36 02     3.698    2.943   35.8   11.5   277   13.6 
2026-09-25 00:00 UT   09 41 41.5   +04 30 26     3.692    2.945   36.4   11.6   277   13.6 
2026-09-26 00:00 UT   09 43 02.7   +04 24 49     3.686    2.947   37.0   11.8   278   13.6 
2026-09-27 00:00 UT   09 44 23.5   +04 19 11     3.679    2.948   37.6   12.0   278   13.6 
2026-09-28 00:00 UT   09 45 44.0   +04 13 33     3.672    2.950   38.2   12.1   278   13.6 
2026-09-29 00:00 UT   09 47 04.1   +04 07 55     3.665    2.952   38.8   12.3   279   13.6 
2026-09-30 00:00 UT   09 48 23.8   +04 02 17     3.658    2.953   39.4   12.4   279   13.6 
2026-10-01 00:00 UT   09 49 43.1   +03 56 38     3.651    2.955   40.0   12.6   279   13.7 
2026-10-02 00:00 UT   09 51 02.1   +03 50 59     3.644    2.957   40.6   12.7   280   13.7 
2026-10-03 00:00 UT   09 52 20.7   +03 45 20     3.636    2.958   41.2   12.9   280   13.7 
2026-10-04 00:00 UT   09 53 38.9   +03 39 41     3.629    2.960   41.9   13.0   280   13.7 
2026-10-05 00:00 UT   09 54 56.7   +03 34 02     3.621    2.962   42.5   13.2   281   13.7 
2026-10-06 00:00 UT   09 56 14.1   +03 28 23     3.613    2.963   43.1   13.3   281   13.7 
2026-10-07 00:00 UT   09 57 31.1   +03 22 45     3.605    2.965   43.7   13.5   281   13.7 
2026-10-08 00:00 UT   09 58 47.6   +03 17 06     3.597    2.967   44.4   13.6   282   13.7 
2026-10-09 00:00 UT   10 00 03.8   +03 11 28     3.589    2.968   45.0   13.8   282   13.7 
2026-10-10 00:00 UT   10 01 19.5   +03 05 51     3.581    2.970   45.7   13.9   282   13.7 
2026-10-11 00:00 UT   10 02 34.8   +03 00 14     3.573    2.972   46.3   14.1   282   13.7 
2026-10-12 00:00 UT   10 03 49.7   +02 54 38     3.564    2.973   46.9   14.2   283   13.7 
2026-10-13 00:00 UT   10 05 04.1   +02 49 02     3.555    2.975   47.6   14.3   283   13.7 
2026-10-14 00:00 UT   10 06 18.1   +02 43 27     3.547    2.977   48.2   14.5   283   13.7 
2026-10-15 00:00 UT   10 07 31.6   +02 37 54     3.538    2.978   48.9   14.6   283   13.7 
2026-10-16 00:00 UT   10 08 44.7   +02 32 21     3.529    2.980   49.5   14.8   284   13.7 
2026-10-17 00:00 UT   10 09 57.3   +02 26 49     3.519    2.982   50.2   14.9   284   13.7 

    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.