(550) Senta
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Today	22 Oct 2025	14.2	2.760 AU	2.203 AU	06h20m	+26°44'	113.9°	19.3°
Opposition	17 Dec 2025	13.1	2.873 AU	1.889 AU	05h44m	+24°37'	178.4°	0.6°

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 Senta are:

            e (Eccentricity)                : 0.2220037
            a (Semimajor axis)              : 2.5899911
            i (Inclination)                 : 10.10609
            Ω (Longitude of ascending node) : 270.66097
            ω (Argument of perihelion)      : 45.35392
            M (Mean anomaly)                : 102.12779
            Epoch                           : 2025 Nov 21

            L (Longitude of perihelion)     : 315.56693
            B (Latitude of perihelion)      : 7.17158
            P (Orbital period in years)     : 4.17            
        

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
2025-10-22 00:00 UT   06 20 25.6   +26 44 52     2.203    2.760  113.9   19.3   271   14.2 
2025-10-22 06:22 UT   06 20 27.5   +26 44 28     2.200    2.760  114.1   19.2   271   14.2 
2025-10-23 00:00 UT   06 20 32.2   +26 43 21     2.192    2.762  114.8   19.1   270   14.2 
2025-10-24 00:00 UT   06 20 37.1   +26 41 49     2.182    2.764  115.8   18.9   270   14.2 
2025-10-25 00:00 UT   06 20 40.2   +26 40 16     2.171    2.766  116.8   18.7   270   14.2 
2025-10-26 00:00 UT   06 20 41.5   +26 38 43     2.161    2.768  117.8   18.5   270   14.2 
2025-10-27 00:00 UT   06 20 41.0   +26 37 09     2.151    2.770  118.8   18.3   270   14.2 
2025-10-28 00:00 UT   06 20 38.7   +26 35 34     2.141    2.773  119.8   18.1   270   14.1 
2025-10-29 00:00 UT   06 20 34.6   +26 33 58     2.131    2.775  120.8   17.9   270   14.1 
2025-10-30 00:00 UT   06 20 28.7   +26 32 22     2.122    2.777  121.8   17.7   270   14.1 
2025-10-31 00:00 UT   06 20 21.0   +26 30 44     2.112    2.779  122.9   17.5   270   14.1 
2025-11-01 00:00 UT   06 20 11.4   +26 29 06     2.103    2.781  123.9   17.2   270   14.1 
2025-11-02 00:00 UT   06 20 00.0   +26 27 26     2.093    2.783  124.9   17.0   270   14.1 
2025-11-03 00:00 UT   06 19 46.9   +26 25 46     2.084    2.785  126.0   16.8   270   14.1 
2025-11-04 00:00 UT   06 19 31.9   +26 24 05     2.075    2.787  127.0   16.5   270   14.0 
2025-11-05 00:00 UT   06 19 15.1   +26 22 22     2.066    2.789  128.1   16.2   270   14.0 
2025-11-06 00:00 UT   06 18 56.4   +26 20 38     2.057    2.791  129.2   16.0   269   14.0 
2025-11-07 00:00 UT   06 18 36.0   +26 18 53     2.049    2.793  130.2   15.7   269   14.0 
2025-11-08 00:00 UT   06 18 13.8   +26 17 07     2.040    2.795  131.3   15.4   269   14.0 
2025-11-09 00:00 UT   06 17 49.8   +26 15 19     2.032    2.797  132.4   15.2   269   14.0 
2025-11-10 00:00 UT   06 17 23.9   +26 13 29     2.024    2.800  133.5   14.9   269   13.9 
2025-11-11 00:00 UT   06 16 56.3   +26 11 39     2.016    2.802  134.6   14.6   269   13.9 
2025-11-12 00:00 UT   06 16 26.9   +26 09 46     2.008    2.804  135.7   14.3   269   13.9 
2025-11-13 00:00 UT   06 15 55.8   +26 07 52     2.001    2.806  136.9   14.0   269   13.9 
2025-11-14 00:00 UT   06 15 22.9   +26 05 56     1.993    2.808  138.0   13.6   269   13.9 
2025-11-15 00:00 UT   06 14 48.3   +26 03 58     1.986    2.810  139.1   13.3   268   13.8 
2025-11-16 00:00 UT   06 14 12.0   +26 01 58     1.979    2.812  140.3   13.0   268   13.8 
2025-11-17 00:00 UT   06 13 34.0   +25 59 57     1.972    2.814  141.4   12.7   268   13.8 
2025-11-18 00:00 UT   06 12 54.3   +25 57 53     1.966    2.816  142.6   12.3   268   13.8 
2025-11-19 00:00 UT   06 12 13.1   +25 55 47     1.960    2.818  143.7   12.0   268   13.8 
2025-11-20 00:00 UT   06 11 30.2   +25 53 38     1.953    2.820  144.9   11.6   268   13.8 
2025-11-21 00:00 UT   06 10 45.8   +25 51 28     1.948    2.822  146.1   11.3   267   13.7 

    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.