(386) Siegena
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Today	20 Nov 2025	11.4	2.467 AU	1.573 AU	04h27m	-10°16'	148.0°	12.2°
Opposition	23 Nov 2025	11.4	2.471 AU	1.576 AU	04h24m	-10°33'	148.3°	12.1°

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) : 166.61219
            ω (Argument of perihelion)      : 221.15380
            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
2025-11-20 00:00 UT   04 27 19.2   -10 16 58     1.573    2.467  148.0   12.2   339   11.4 
2025-11-20 04:38 UT   04 27 10.0   -10 17 59     1.573    2.468  148.0   12.2   340   11.4 
2025-11-21 00:00 UT   04 26 31.1   -10 22 07     1.574    2.468  148.1   12.2   341   11.4 
2025-11-22 00:00 UT   04 25 42.6   -10 26 56     1.574    2.469  148.2   12.2   344   11.4 
2025-11-23 00:00 UT   04 24 53.7   -10 31 25     1.575    2.470  148.3   12.1   346   11.4 
2025-11-24 00:00 UT   04 24 04.6   -10 35 34     1.576    2.471  148.3   12.1   348   11.4 
2025-11-25 00:00 UT   04 23 15.3   -10 39 23     1.578    2.472  148.2   12.1   351   11.4 
2025-11-26 00:00 UT   04 22 25.8   -10 42 52     1.579    2.473  148.2   12.2   353   11.4 
2025-11-27 00:00 UT   04 21 36.3   -10 46 00     1.581    2.474  148.1   12.2   355   11.4 
2025-11-28 00:00 UT   04 20 46.7   -10 48 48     1.583    2.475  147.9   12.2   357   11.4 
2025-11-29 00:00 UT   04 19 57.3   -10 51 15     1.586    2.476  147.7   12.3   360   11.5 
2025-11-30 00:00 UT   04 19 08.0   -10 53 22     1.588    2.477  147.5   12.3     2   11.5 
2025-12-01 00:00 UT   04 18 18.9   -10 55 08     1.591    2.478  147.3   12.4     4   11.5 
2025-12-02 00:00 UT   04 17 30.1   -10 56 33     1.594    2.480  147.0   12.5     6   11.5 
2025-12-03 00:00 UT   04 16 41.7   -10 57 37     1.597    2.481  146.6   12.6     8   11.5 
2025-12-04 00:00 UT   04 15 53.6   -10 58 21     1.601    2.482  146.3   12.7    10   11.5 
2025-12-05 00:00 UT   04 15 06.0   -10 58 44     1.604    2.483  145.9   12.9    12   11.5 
2025-12-06 00:00 UT   04 14 18.9   -10 58 46     1.608    2.484  145.5   13.0    14   11.5 
2025-12-07 00:00 UT   04 13 32.4   -10 58 29     1.612    2.485  145.0   13.1    16   11.5 
2025-12-08 00:00 UT   04 12 46.6   -10 57 51     1.617    2.486  144.6   13.3    18   11.5 
2025-12-09 00:00 UT   04 12 01.4   -10 56 53     1.621    2.487  144.1   13.4    20   11.6 
2025-12-10 00:00 UT   04 11 17.0   -10 55 35     1.626    2.488  143.5   13.6    22   11.6 
2025-12-11 00:00 UT   04 10 33.4   -10 53 57     1.631    2.489  143.0   13.8    24   11.6 
2025-12-12 00:00 UT   04 09 50.7   -10 51 59     1.636    2.490  142.4   13.9    25   11.6 
2025-12-13 00:00 UT   04 09 08.8   -10 49 42     1.642    2.491  141.9   14.1    27   11.6 
2025-12-14 00:00 UT   04 08 27.9   -10 47 06     1.647    2.493  141.3   14.3    29   11.6 
2025-12-15 00:00 UT   04 07 48.1   -10 44 11     1.653    2.494  140.6   14.5    30   11.6 
2025-12-16 00:00 UT   04 07 09.3   -10 40 57     1.659    2.495  140.0   14.7    32   11.7 
2025-12-17 00:00 UT   04 06 31.6   -10 37 25     1.666    2.496  139.3   14.9    33   11.7 
2025-12-18 00:00 UT   04 05 55.1   -10 33 35     1.672    2.497  138.7   15.1    35   11.7 
2025-12-19 00:00 UT   04 05 19.7   -10 29 27     1.679    2.498  138.0   15.3    36   11.7 
2025-12-20 00:00 UT   04 04 45.6   -10 25 02     1.686    2.499  137.3   15.5    37   11.7 

    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.