(386) Siegena
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Today	28 Jul 2026	13.3	2.844 AU	3.836 AU	08h13m	+09°08'	10.6°	3.8°
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
2026-07-28 00:00 UT   08 13 17.2   +09 08 40     3.836    2.844   10.6    3.8   199   13.3 
2026-07-28 00:50 UT   08 13 20.5   +09 08 33     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 
2026-08-04 00:00 UT   08 24 28.8   +08 44 14     3.843    2.856   11.4    4.0   220   13.3 
2026-08-05 00:00 UT   08 26 04.1   +08 40 30     3.844    2.857   11.6    4.1   223   13.3 
2026-08-06 00:00 UT   08 27 39.1   +08 36 42     3.844    2.859   11.9    4.2   225   13.3 
2026-08-07 00:00 UT   08 29 14.0   +08 32 50     3.844    2.861   12.1    4.3   228   13.3 
2026-08-08 00:00 UT   08 30 48.7   +08 28 55     3.845    2.863   12.4    4.4   230   13.3 
2026-08-09 00:00 UT   08 32 23.2   +08 24 56     3.845    2.864   12.7    4.5   232   13.3 
2026-08-10 00:00 UT   08 33 57.4   +08 20 54     3.844    2.866   13.0    4.6   235   13.3 
2026-08-11 00:00 UT   08 35 31.5   +08 16 48     3.844    2.868   13.4    4.7   237   13.4 
2026-08-12 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 

    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.