(386) Siegena
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Today	29 Jun 2026	13.3	2.793 AU	3.738 AU	07h25m	+10°12'	18.6°	6.7°
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
2026-06-29 00:00 UT   07 25 40.4   +10 12 22     3.738    2.793   18.6    6.7   136   13.3 
2026-06-29 22:41 UT   07 27 14.8   +10 11 21     3.743    2.795   18.2    6.5   137   13.3 
2026-06-30 00:00 UT   07 27 20.3   +10 11 18     3.743    2.795   18.2    6.5   137   13.3 
2026-07-01 00:00 UT   07 29 00.1   +10 10 08     3.748    2.797   17.7    6.4   139   13.3 
2026-07-02 00:00 UT   07 30 39.8   +10 08 54     3.753    2.798   17.3    6.2   140   13.3 
2026-07-03 00:00 UT   07 32 19.5   +10 07 34     3.757    2.800   16.9    6.0   141   13.3 
2026-07-04 00:00 UT   07 33 59.1   +10 06 09     3.762    2.802   16.5    5.9   143   13.3 
2026-07-05 00:00 UT   07 35 38.7   +10 04 39     3.767    2.804   16.0    5.8   144   13.3 
2026-07-06 00:00 UT   07 37 18.1   +10 03 05     3.771    2.805   15.6    5.6   145   13.3 
2026-07-07 00:00 UT   07 38 57.5   +10 01 25     3.775    2.807   15.2    5.5   147   13.3 
2026-07-08 00:00 UT   07 40 36.7   +09 59 40     3.779    2.809   14.9    5.3   149   13.3 
2026-07-09 00:00 UT   07 42 15.9   +09 57 51     3.783    2.811   14.5    5.2   150   13.3 
2026-07-10 00:00 UT   07 43 55.0   +09 55 57     3.787    2.812   14.1    5.1   152   13.3 
2026-07-11 00:00 UT   07 45 34.0   +09 53 58     3.791    2.814   13.8    4.9   154   13.3 
2026-07-12 00:00 UT   07 47 12.9   +09 51 54     3.795    2.816   13.4    4.8   156   13.3 
2026-07-13 00:00 UT   07 48 51.6   +09 49 45     3.798    2.818   13.1    4.7   158   13.3 
2026-07-14 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 

    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.