(550) Senta
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Today	18 Apr 2026	15.3	3.058 AU	3.388 AU	06h00m	+20°49'	62.6°	16.9°
Opposition	25 Feb 2027	13.8	3.108 AU	2.137 AU	10h12m	-03°22'	166.5°	4.3°

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
2026-04-18 00:00 UT   06 00 40.8   +20 49 46     3.388    3.058   62.6   16.9    91   15.3 
2026-04-18 09:39 UT   06 01 09.3   +20 49 23     3.393    3.059   62.3   16.9    91   15.3 
2026-04-19 00:00 UT   06 01 51.8   +20 48 49     3.402    3.059   61.9   16.8    92   15.3 
2026-04-20 00:00 UT   06 03 03.3   +20 47 49     3.415    3.060   61.2   16.7    92   15.3 
2026-04-21 00:00 UT   06 04 15.3   +20 46 48     3.429    3.062   60.5   16.6    92   15.3 
2026-04-22 00:00 UT   06 05 27.7   +20 45 45     3.443    3.063   59.8   16.5    92   15.3 
2026-04-23 00:00 UT   06 06 40.6   +20 44 40     3.456    3.064   59.1   16.4    92   15.3 
2026-04-24 00:00 UT   06 07 54.0   +20 43 33     3.470    3.065   58.4   16.2    92   15.3 
2026-04-25 00:00 UT   06 09 07.8   +20 42 24     3.483    3.066   57.7   16.1    93   15.3 
2026-04-26 00:00 UT   06 10 22.0   +20 41 13     3.496    3.067   57.0   16.0    93   15.3 
2026-04-27 00:00 UT   06 11 36.6   +20 39 60     3.509    3.068   56.4   15.8    93   15.4 
2026-04-28 00:00 UT   06 12 51.6   +20 38 44     3.522    3.070   55.7   15.7    93   15.4 
2026-04-29 00:00 UT   06 14 07.0   +20 37 26     3.535    3.071   55.0   15.6    93   15.4 
2026-04-30 00:00 UT   06 15 22.8   +20 36 06     3.548    3.072   54.3   15.5    94   15.4 
2026-05-01 00:00 UT   06 16 38.9   +20 34 44     3.560    3.073   53.7   15.3    94   15.4 
2026-05-02 00:00 UT   06 17 55.4   +20 33 20     3.573    3.074   53.0   15.2    94   15.4 
2026-05-03 00:00 UT   06 19 12.3   +20 31 53     3.585    3.075   52.3   15.0    94   15.4 
2026-05-04 00:00 UT   06 20 29.5   +20 30 23     3.598    3.076   51.7   14.9    94   15.4 
2026-05-05 00:00 UT   06 21 47.0   +20 28 51     3.610    3.077   51.0   14.8    94   15.4 
2026-05-06 00:00 UT   06 23 04.9   +20 27 17     3.622    3.078   50.3   14.6    95   15.4 
2026-05-07 00:00 UT   06 24 23.1   +20 25 40     3.634    3.079   49.7   14.5    95   15.4 
2026-05-08 00:00 UT   06 25 41.7   +20 24 01     3.646    3.080   49.0   14.3    95   15.4 
2026-05-09 00:00 UT   06 27 00.5   +20 22 19     3.658    3.081   48.4   14.2    95   15.4 
2026-05-10 00:00 UT   06 28 19.6   +20 20 34     3.670    3.082   47.7   14.0    95   15.4 
2026-05-11 00:00 UT   06 29 39.1   +20 18 46     3.681    3.083   47.1   13.9    96   15.4 
2026-05-12 00:00 UT   06 30 58.8   +20 16 56     3.693    3.084   46.4   13.7    96   15.4 
2026-05-13 00:00 UT   06 32 18.8   +20 15 04     3.704    3.085   45.8   13.6    96   15.4 
2026-05-14 00:00 UT   06 33 39.1   +20 13 08     3.715    3.086   45.1   13.4    96   15.4 
2026-05-15 00:00 UT   06 34 59.6   +20 11 10     3.726    3.087   44.5   13.3    97   15.4 
2026-05-16 00:00 UT   06 36 20.4   +20 09 08     3.737    3.088   43.8   13.1    97   15.4 

    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.