(386) Siegena
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Today	13 Jul 2026	13.3	2.818 AU	3.798 AU	07h48m	+09°49'	13.1°	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
2026-07-13 00:00 UT   07 48 51.6   +09 49 45     3.798    2.818   13.1    4.7   158   13.3 
2026-07-13 23:47 UT   07 50 29.4   +09 47 33     3.802    2.819   12.8    4.6   160   13.3 
2026-07-14 00:00 UT   07 50 30.3   +09 47 32     3.802    2.819   12.8    4.6   160   13.3 
2026-07-15 00:00 UT   07 52 08.8   +09 45 14     3.805    2.821   12.5    4.5   162   13.3 
2026-07-16 00:00 UT   07 53 47.3   +09 42 51     3.808    2.823   12.2    4.4   165   13.3 
2026-07-17 00:00 UT   07 55 25.6   +09 40 24     3.811    2.824   11.9    4.3   167   13.3 
2026-07-18 00:00 UT   07 57 03.7   +09 37 52     3.814    2.826   11.7    4.2   169   13.3 
2026-07-19 00:00 UT   07 58 41.7   +09 35 16     3.817    2.828   11.5    4.1   172   13.3 
2026-07-20 00:00 UT   08 00 19.6   +09 32 36     3.819    2.830   11.3    4.0   175   13.3 
2026-07-21 00:00 UT   08 01 57.3   +09 29 51     3.822    2.831   11.1    4.0   178   13.3 
2026-07-22 00:00 UT   08 03 34.9   +09 27 02     3.824    2.833   10.9    3.9   181   13.3 
2026-07-23 00:00 UT   08 05 12.4   +09 24 09     3.826    2.835   10.8    3.9   183   13.3 
2026-07-24 00:00 UT   08 06 49.7   +09 21 11     3.828    2.837   10.7    3.8   186   13.3 
2026-07-25 00:00 UT   08 08 26.8   +09 18 09     3.830    2.838   10.6    3.8   190   13.3 
2026-07-26 00:00 UT   08 10 03.7   +09 15 04     3.832    2.840   10.6    3.8   193   13.3 
2026-07-27 00:00 UT   08 11 40.5   +09 11 54     3.834    2.842   10.6    3.8   196   13.3 
2026-07-28 00:00 UT   08 13 17.2   +09 08 40     3.836    2.844   10.6    3.8   199   13.3 
2026-07-29 00:00 UT   08 14 53.7   +09 05 22     3.837    2.845   10.6    3.8   202   13.3 
2026-07-30 00:00 UT   08 16 30.0   +09 02 00     3.838    2.847   10.7    3.8   205   13.3 
2026-07-31 00:00 UT   08 18 06.1   +08 58 35     3.840    2.849   10.8    3.8   208   13.3 
2026-08-01 00:00 UT   08 19 42.0   +08 55 05     3.841    2.851   10.9    3.9   211   13.3 
2026-08-02 00:00 UT   08 21 17.8   +08 51 32     3.842    2.852   11.0    3.9   214   13.3 
2026-08-03 00:00 UT   08 22 53.4   +08 47 55     3.843    2.854   11.2    4.0   217   13.3 

    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.