(386) Siegena
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Today	20 Oct 2026	13.7	2.986 AU	3.491 AU	10h13m	+02°10'	52.2°	15.3°
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)                 : 20.22162
            Ω (Longitude of ascending node) : 166.58803
            ω (Argument of perihelion)      : 221.29876
            M (Mean anomaly)                : 64.12235
            Epoch                           : 2026 Jun 09

            L (Longitude of perihelion)     : 206.08801
            B (Latitude of perihelion)      : -13.18674
            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
2026-10-20 00:00 UT   10 13 32.2   +02 10 22     3.491    2.986   52.2   15.3   285   13.7 
2026-10-20 09:39 UT   10 14 00.6   +02 08 10     3.488    2.987   52.5   15.3   285   13.7 
2026-10-21 00:00 UT   10 14 42.8   +02 04 55     3.482    2.988   52.9   15.4   285   13.7 
2026-10-22 00:00 UT   10 15 53.0   +01 59 30     3.472    2.990   53.5   15.5   285   13.7 
2026-10-23 00:00 UT   10 17 02.7   +01 54 07     3.462    2.991   54.2   15.7   285   13.7 
2026-10-24 00:00 UT   10 18 11.9   +01 48 45     3.452    2.993   54.9   15.8   285   13.7 
2026-10-25 00:00 UT   10 19 20.5   +01 43 25     3.442    2.995   55.6   15.9   286   13.7 
2026-10-26 00:00 UT   10 20 28.7   +01 38 06     3.432    2.996   56.3   16.0   286   13.7 
2026-10-27 00:00 UT   10 21 36.3   +01 32 50     3.422    2.998   56.9   16.1   286   13.7 
2026-10-28 00:00 UT   10 22 43.4   +01 27 36     3.412    3.000   57.6   16.3   286   13.7 
2026-10-29 00:00 UT   10 23 49.9   +01 22 23     3.401    3.001   58.3   16.4   287   13.7 
2026-10-30 00:00 UT   10 24 55.9   +01 17 13     3.391    3.003   59.0   16.5   287   13.7 
2026-10-31 00:00 UT   10 26 01.4   +01 12 05     3.380    3.004   59.7   16.6   287   13.7 
2026-11-01 00:00 UT   10 27 06.3   +01 06 60     3.369    3.006   60.4   16.7   287   13.7 
2026-11-02 00:00 UT   10 28 10.6   +01 01 57     3.358    3.008   61.1   16.8   287   13.7 
2026-11-03 00:00 UT   10 29 14.4   +00 56 56     3.347    3.009   61.8   16.9   287   13.7 
2026-11-04 00:00 UT   10 30 17.6   +00 51 58     3.336    3.011   62.6   17.0   288   13.7 
2026-11-05 00:00 UT   10 31 20.2   +00 47 03     3.325    3.012   63.3   17.1   288   13.6 
2026-11-06 00:00 UT   10 32 22.1   +00 42 11     3.314    3.014   64.0   17.2   288   13.6 
2026-11-07 00:00 UT   10 33 23.5   +00 37 21     3.303    3.016   64.7   17.3   288   13.6 
2026-11-08 00:00 UT   10 34 24.2   +00 32 35     3.291    3.017   65.4   17.4   288   13.6 
2026-11-09 00:00 UT   10 35 24.3   +00 27 52     3.280    3.019   66.2   17.5   289   13.6 
2026-11-10 00:00 UT   10 36 23.8   +00 23 13     3.268    3.020   66.9   17.6   289   13.6 
2026-11-11 00:00 UT   10 37 22.6   +00 18 37     3.256    3.022   67.6   17.6   289   13.6 
2026-11-12 00:00 UT   10 38 20.7   +00 14 04     3.245    3.024   68.4   17.7   289   13.6 
2026-11-13 00:00 UT   10 39 18.2   +00 09 35     3.233    3.025   69.1   17.8   289   13.6 
2026-11-14 00:00 UT   10 40 15.0   +00 05 10     3.221    3.027   69.9   17.9   289   13.6 
2026-11-15 00:00 UT   10 41 11.1   +00 00 49     3.209    3.028   70.6   18.0   289   13.6 
2026-11-16 00:00 UT   10 42 06.5   +00 03 28     3.197    3.030   71.4   18.0   290   13.6 
2026-11-17 00:00 UT   10 43 01.2   +00 07 42     3.185    3.032   72.2   18.1   290   13.6 
2026-11-18 00:00 UT   10 43 55.2   +00 11 51     3.173    3.033   72.9   18.2   290   13.6 
2026-11-19 00:00 UT   10 44 48.4   +00 15 55     3.160    3.035   73.7   18.2   290   13.6 

    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.