(386) Siegena
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Today	18 May 2026	13.4	2.721 AU	3.426 AU	06h15m	+09°33'	39.4°	13.6°
Opposition	1 Mar 2027	12.1	3.180 AU	2.191 AU	10h46m	+04°32'	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)                : 0.1692815
            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
2026-05-18 00:00 UT   06 15 45.0   +09 33 15     3.426    2.721   39.4   13.6   109   13.4 
2026-05-18 20:59 UT   06 17 11.0   +09 35 50     3.434    2.722   38.9   13.5   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 
2026-05-25 00:00 UT   06 27 16.9   +09 51 47     3.490    2.733   35.7   12.5   112   13.4 
2026-05-26 00:00 UT   06 28 56.2   +09 54 01     3.499    2.735   35.2   12.3   113   13.4 
2026-05-27 00:00 UT   06 30 35.6   +09 56 10     3.508    2.736   34.7   12.2   113   13.4 
2026-05-28 00:00 UT   06 32 15.1   +09 58 12     3.516    2.738   34.2   12.0   114   13.4 
2026-05-29 00:00 UT   06 33 54.7   +10 00 09     3.525    2.740   33.7   11.8   114   13.4 
2026-05-30 00:00 UT   06 35 34.4   +10 01 59     3.533    2.741   33.2   11.7   115   13.4 
2026-05-31 00:00 UT   06 37 14.2   +10 03 43     3.542    2.743   32.7   11.5   115   13.4 
2026-06-01 00:00 UT   06 38 54.0   +10 05 22     3.550    2.745   32.1   11.3   116   13.4 
2026-06-02 00:00 UT   06 40 33.9   +10 06 54     3.558    2.747   31.6   11.2   116   13.4 
2026-06-03 00:00 UT   06 42 13.9   +10 08 21     3.566    2.748   31.1   11.0   117   13.4 
2026-06-04 00:00 UT   06 43 53.9   +10 09 41     3.574    2.750   30.6   10.8   117   13.4 
2026-06-05 00:00 UT   06 45 34.0   +10 10 56     3.582    2.752   30.1   10.7   118   13.4 
2026-06-06 00:00 UT   06 47 14.1   +10 12 05     3.590    2.754   29.6   10.5   118   13.4 
2026-06-07 00:00 UT   06 48 54.3   +10 13 08     3.597    2.755   29.1   10.3   119   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.