(550) Senta
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Today	25 Nov 2025	13.7	2.830 AU	1.926 AU	06h07m	+25°42'	150.8°	9.8°
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
2025-11-25 00:00 UT   06 07 33.5   +25 42 20     1.926    2.830  150.8    9.8   267   13.7 
2025-11-25 21:05 UT   06 06 48.3   +25 40 15     1.922    2.831  151.9    9.5   266   13.6 
2025-11-26 00:00 UT   06 06 42.0   +25 39 57     1.922    2.832  152.0    9.4   266   13.6 
2025-11-27 00:00 UT   06 05 49.1   +25 37 31     1.917    2.834  153.2    9.0   266   13.6 
2025-11-28 00:00 UT   06 04 55.1   +25 35 02     1.913    2.836  154.4    8.6   266   13.6 
2025-11-29 00:00 UT   06 03 59.9   +25 32 30     1.909    2.838  155.7    8.2   266   13.6 
2025-11-30 00:00 UT   06 03 03.5   +25 29 56     1.906    2.839  156.9    7.8   265   13.6 
2025-12-01 00:00 UT   06 02 06.1   +25 27 18     1.902    2.841  158.1    7.4   265   13.5 
2025-12-02 00:00 UT   06 01 07.7   +25 24 37     1.899    2.843  159.3    7.0   265   13.5 
2025-12-03 00:00 UT   06 00 08.3   +25 21 54     1.897    2.845  160.6    6.6   265   13.5 
2025-12-04 00:00 UT   05 59 08.1   +25 19 07     1.894    2.847  161.8    6.2   264   13.5 
2025-12-05 00:00 UT   05 58 07.0   +25 16 18     1.892    2.849  163.1    5.8   264   13.4 
2025-12-06 00:00 UT   05 57 05.1   +25 13 25     1.890    2.851  164.3    5.4   263   13.4 
2025-12-07 00:00 UT   05 56 02.6   +25 10 30     1.888    2.853  165.6    4.9   263   13.4 
2025-12-08 00:00 UT   05 54 59.4   +25 07 31     1.887    2.855  166.8    4.5   262   13.4 
2025-12-09 00:00 UT   05 53 55.7   +25 04 30     1.886    2.857  168.1    4.1   262   13.4 
2025-12-10 00:00 UT   05 52 51.4   +25 01 26     1.885    2.859  169.3    3.7   261   13.3 
2025-12-11 00:00 UT   05 51 46.8   +24 58 19     1.885    2.861  170.6    3.2   260   13.3 
2025-12-12 00:00 UT   05 50 41.7   +24 55 09     1.884    2.863  171.8    2.8   259   13.3 
2025-12-13 00:00 UT   05 49 36.4   +24 51 57     1.885    2.864  173.1    2.4   257   13.3 
2025-12-14 00:00 UT   05 48 30.9   +24 48 42     1.885    2.866  174.3    2.0   255   13.2 
2025-12-15 00:00 UT   05 47 25.2   +24 45 24     1.886    2.868  175.5    1.5   251   13.2 
2025-12-16 00:00 UT   05 46 19.5   +24 42 04     1.887    2.870  176.7    1.1   245   13.2 
2025-12-17 00:00 UT   05 45 13.8   +24 38 42     1.888    2.872  177.9    0.7   232   13.1 
2025-12-18 00:00 UT   05 44 08.1   +24 35 18     1.890    2.874  178.7    0.4   199   13.1 
2025-12-19 00:00 UT   05 43 02.7   +24 31 51     1.892    2.876  178.6    0.5   143   13.1 
2025-12-20 00:00 UT   05 41 57.4   +24 28 23     1.894    2.877  177.6    0.8   116   13.1 
2025-12-21 00:00 UT   05 40 52.5   +24 24 53     1.897    2.879  176.5    1.2   106   13.2 
2025-12-22 00:00 UT   05 39 48.0   +24 21 21     1.900    2.881  175.3    1.6   100   13.2 
2025-12-23 00:00 UT   05 38 43.9   +24 17 48     1.903    2.883  174.0    2.0    97   13.3 
2025-12-24 00:00 UT   05 37 40.4   +24 14 13     1.906    2.885  172.8    2.5    95   13.3 
2025-12-25 00:00 UT   05 36 37.5   +24 10 38     1.910    2.887  171.6    2.9    93   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.