(386) Siegena
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Today	20 Apr 2026	13.3	2.674 AU	3.127 AU	05h31m	+07°28'	54.6°	17.8°
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
2026-04-20 00:00 UT   05 31 15.4   +07 28 42     3.127    2.674   54.6   17.8    99   13.3 
2026-04-20 21:39 UT   05 32 38.0   +07 33 58     3.137    2.676   54.1   17.7    99   13.3 
2026-04-21 00:00 UT   05 32 47.0   +07 34 32     3.139    2.676   54.1   17.7    99   13.3 
2026-04-22 00:00 UT   05 34 19.0   +07 40 16     3.150    2.677   53.5   17.6    99   13.3 
2026-04-23 00:00 UT   05 35 51.3   +07 45 53     3.162    2.679   53.0   17.4   100   13.3 
2026-04-24 00:00 UT   05 37 23.9   +07 51 25     3.173    2.681   52.4   17.3   100   13.3 
2026-04-25 00:00 UT   05 38 56.9   +07 56 50     3.184    2.682   51.8   17.1   100   13.3 
2026-04-26 00:00 UT   05 40 30.1   +08 02 10     3.196    2.684   51.3   17.0   101   13.3 
2026-04-27 00:00 UT   05 42 03.6   +08 07 23     3.207    2.686   50.7   16.9   101   13.3 
2026-04-28 00:00 UT   05 43 37.5   +08 12 30     3.218    2.687   50.2   16.7   101   13.3 
2026-04-29 00:00 UT   05 45 11.6   +08 17 31     3.229    2.689   49.6   16.6   102   13.3 
2026-04-30 00:00 UT   05 46 46.0   +08 22 25     3.240    2.691   49.1   16.4   102   13.3 
2026-05-01 00:00 UT   05 48 20.6   +08 27 14     3.251    2.692   48.5   16.3   102   13.3 
2026-05-02 00:00 UT   05 49 55.6   +08 31 56     3.262    2.694   48.0   16.1   103   13.3 
2026-05-03 00:00 UT   05 51 30.7   +08 36 32     3.273    2.696   47.4   16.0   103   13.3 
2026-05-04 00:00 UT   05 53 06.2   +08 41 02     3.284    2.697   46.9   15.8   104   13.3 
2026-05-05 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 

    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.