(386) Siegena
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Today	11 Aug 2026	13.4	2.868 AU	3.844 AU	08h35m	+08°16'	13.4°	4.7°
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
2026-08-11 00:00 UT   08 35 31.5   +08 16 48     3.844    2.868   13.4    4.7   237   13.4 
2026-08-11 02:00 UT   08 35 39.3   +08 16 28     3.844    2.868   13.4    4.7   237   13.4 
2026-08-12 00:00 UT   08 37 05.4   +08 12 40     3.844    2.870   13.7    4.8   239   13.4 
2026-08-13 00:00 UT   08 38 39.0   +08 08 28     3.843    2.871   14.1    4.9   240   13.4 
2026-08-14 00:00 UT   08 40 12.5   +08 04 12     3.843    2.873   14.5    5.1   242   13.4 
2026-08-15 00:00 UT   08 41 45.7   +07 59 54     3.842    2.875   14.9    5.2   244   13.4 
2026-08-16 00:00 UT   08 43 18.7   +07 55 32     3.841    2.876   15.3    5.3   246   13.4 
2026-08-17 00:00 UT   08 44 51.4   +07 51 08     3.840    2.878   15.7    5.5   247   13.4 
2026-08-18 00:00 UT   08 46 24.0   +07 46 40     3.839    2.880   16.1    5.6   249   13.4 
2026-08-19 00:00 UT   08 47 56.3   +07 42 10     3.837    2.882   16.6    5.7   250   13.4 
2026-08-20 00:00 UT   08 49 28.3   +07 37 37     3.836    2.883   17.0    5.9   252   13.4 
2026-08-21 00:00 UT   08 51 00.2   +07 33 01     3.834    2.885   17.4    6.0   253   13.4 
2026-08-22 00:00 UT   08 52 31.7   +07 28 22     3.832    2.887   17.9    6.2   254   13.4 
2026-08-23 00:00 UT   08 54 03.1   +07 23 41     3.830    2.888   18.4    6.3   255   13.4 
2026-08-24 00:00 UT   08 55 34.2   +07 18 57     3.828    2.890   18.8    6.5   256   13.5 
2026-08-25 00:00 UT   08 57 05.0   +07 14 10     3.826    2.892   19.3    6.6   257   13.5 
2026-08-26 00:00 UT   08 58 35.6   +07 09 21     3.824    2.894   19.8    6.8   259   13.5 
2026-08-27 00:00 UT   09 00 05.9   +07 04 30     3.822    2.895   20.3    7.0   260   13.5 
2026-08-28 00:00 UT   09 01 36.0   +06 59 36     3.819    2.897   20.8    7.1   260   13.5 
2026-08-29 00:00 UT   09 03 05.8   +06 54 40     3.816    2.899   21.3    7.3   261   13.5 
2026-08-30 00:00 UT   09 04 35.3   +06 49 41     3.813    2.900   21.8    7.4   262   13.5 
2026-08-31 00:00 UT   09 06 04.6   +06 44 40     3.810    2.902   22.3    7.6   263   13.5 
2026-09-01 00:00 UT   09 07 33.7   +06 39 37     3.807    2.904   22.8    7.8   264   13.5 
2026-09-02 00:00 UT   09 09 02.4   +06 34 32     3.804    2.906   23.4    7.9   265   13.5 

    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.