(386) Siegena
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Today	19 Apr 2024	13.4	2.993 AU	2.818 AU	19h48m	-00°37'	90.1°	19.6°
Opposition	18 Jul 2024	12.0	2.840 AU	1.883 AU	19h36m	+03°01'	155.7°	8.5°

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)                : 0.1692958
            a (Semimajor axis)              : 2.8980820
            i (Inclination)                 : 20.21680
            Ω (Longitude of ascending node) : 166.62221
            ω (Argument of perihelion)      : 220.98794
            M (Mean anomaly)                : 264.53670
            Epoch                           : 2024 Mar 31

            L (Longitude of perihelion)     : 205.81549
            B (Latitude of perihelion)      : -13.10061
            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. A more printer-friendly version of the same chart can be found below.

Ephemerides:

Date       Time       RA (2000)    DEC (2000)    delta   radius  elong  phase   PA    magn
2024-04-19 00:00 UT   19 48 20.9   +00 37 52     2.818    2.993   90.1   19.6   259   13.4 
2024-04-19 09:43 UT   19 48 38.1   +00 35 16     2.812    2.993   90.4   19.6   259   13.4 
2024-04-20 00:00 UT   19 49 03.1   +00 31 25     2.804    2.992   90.8   19.6   259   13.4 
2024-04-21 00:00 UT   19 49 44.3   +00 24 58     2.789    2.990   91.5   19.6   258   13.4 
2024-04-22 00:00 UT   19 50 24.6   +00 18 32     2.775    2.988   92.3   19.6   258   13.4 
2024-04-23 00:00 UT   19 51 04.0   +00 12 06     2.760    2.987   93.0   19.6   257   13.3 
2024-04-24 00:00 UT   19 51 42.4   +00 05 40     2.746    2.985   93.7   19.6   257   13.3 
2024-04-25 00:00 UT   19 52 19.9   +00 00 45     2.732    2.983   94.5   19.6   257   13.3 
2024-04-26 00:00 UT   19 52 56.3   +00 07 10     2.717    2.982   95.2   19.6   256   13.3 
2024-04-27 00:00 UT   19 53 31.8   +00 13 33     2.703    2.980   95.9   19.6   256   13.3 
2024-04-28 00:00 UT   19 54 06.3   +00 19 56     2.689    2.979   96.7   19.6   256   13.3 
2024-04-29 00:00 UT   19 54 39.8   +00 26 17     2.674    2.977   97.4   19.6   255   13.3 
2024-04-30 00:00 UT   19 55 12.2   +00 32 37     2.660    2.975   98.2   19.6   255   13.3 
2024-05-01 00:00 UT   19 55 43.6   +00 38 56     2.646    2.974   98.9   19.6   255   13.2 
2024-05-02 00:00 UT   19 56 13.9   +00 45 13     2.632    2.972   99.7   19.5   254   13.2 
2024-05-03 00:00 UT   19 56 43.2   +00 51 28     2.617    2.970  100.4   19.5   254   13.2 
2024-05-04 00:00 UT   19 57 11.4   +00 57 41     2.603    2.969  101.2   19.5   254   13.2 
2024-05-05 00:00 UT   19 57 38.5   +01 03 52     2.589    2.967  102.0   19.4   253   13.2 
2024-05-06 00:00 UT   19 58 04.5   +01 10 01     2.575    2.965  102.7   19.4   253   13.2 
2024-05-07 00:00 UT   19 58 29.3   +01 16 08     2.561    2.964  103.5   19.3   252   13.2 
2024-05-08 00:00 UT   19 58 53.1   +01 22 11     2.547    2.962  104.3   19.3   252   13.1 
2024-05-09 00:00 UT   19 59 15.7   +01 28 12     2.533    2.960  105.0   19.2   252   13.1 
2024-05-10 00:00 UT   19 59 37.1   +01 34 10     2.519    2.959  105.8   19.2   251   13.1 
2024-05-11 00:00 UT   19 59 57.4   +01 40 05     2.506    2.957  106.6   19.1   251   13.1 
2024-05-12 00:00 UT   20 00 16.5   +01 45 56     2.492    2.955  107.4   19.0   250   13.1 
2024-05-13 00:00 UT   20 00 34.4   +01 51 43     2.478    2.954  108.2   19.0   250   13.1 
2024-05-14 00:00 UT   20 00 51.1   +01 57 27     2.465    2.952  109.0   18.9   250   13.1 
2024-05-15 00:00 UT   20 01 06.7   +02 03 06     2.451    2.950  109.7   18.8   249   13.0 
2024-05-16 00:00 UT   20 01 21.0   +02 08 42     2.438    2.949  110.5   18.7   249   13.0 
2024-05-17 00:00 UT   20 01 34.1   +02 14 13     2.424    2.947  111.3   18.6   248   13.0 
2024-05-18 00:00 UT   20 01 46.1   +02 19 39     2.411    2.945  112.1   18.5   248   13.0 
2024-05-19 00:00 UT   20 01 56.7   +02 25 01     2.398    2.944  112.9   18.5   247   13.0 

    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.