(550) Senta
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Today	3 Sep 2026	15.4	3.160 AU	4.052 AU	09h09m	+11°15'	24.3°	7.5°
Opposition	25 Feb 2027	13.8	3.111 AU	2.140 AU	10h12m	-03°20'	166.5°	4.2°

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)                : 0.2217616
            a (Semimajor axis)              : 2.5919832
            i (Inclination)                 : 10.09761
            Ω (Longitude of ascending node) : 270.65001
            ω (Argument of perihelion)      : 45.60060
            M (Mean anomaly)                : 149.09032
            Epoch                           : 2026 Jun 09

            L (Longitude of perihelion)     : 315.80344
            B (Latitude of perihelion)      : 7.19616
            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
2026-09-03 00:00 UT   09 09 11.1   +11 15 38     4.052    3.160   24.3    7.5   276   15.4 
2026-09-03 13:49 UT   09 09 55.5   +11 11 25     4.049    3.160   24.7    7.7   276   15.4 
2026-09-04 00:00 UT   09 10 28.2   +11 08 18     4.047    3.160   24.9    7.7   276   15.4 
2026-09-05 00:00 UT   09 11 45.1   +11 00 56     4.041    3.161   25.5    7.9   277   15.4 
2026-09-06 00:00 UT   09 13 01.7   +10 53 33     4.034    3.161   26.2    8.1   277   15.4 
2026-09-07 00:00 UT   09 14 18.1   +10 46 07     4.028    3.161   26.8    8.3   277   15.4 
2026-09-08 00:00 UT   09 15 34.2   +10 38 40     4.022    3.162   27.4    8.4   278   15.4 
2026-09-09 00:00 UT   09 16 50.0   +10 31 11     4.015    3.162   28.0    8.6   278   15.4 
2026-09-10 00:00 UT   09 18 05.6   +10 23 41     4.009    3.162   28.7    8.8   278   15.4 
2026-09-11 00:00 UT   09 19 20.9   +10 16 09     4.002    3.162   29.3    9.0   279   15.4 
2026-09-12 00:00 UT   09 20 36.0   +10 08 35     3.995    3.163   29.9    9.1   279   15.4 
2026-09-13 00:00 UT   09 21 50.7   +10 00 60     3.988    3.163   30.6    9.3   279   15.4 
2026-09-14 00:00 UT   09 23 05.2   +09 53 23     3.980    3.163   31.2    9.5   279   15.4 
2026-09-15 00:00 UT   09 24 19.3   +09 45 45     3.973    3.163   31.9    9.7   280   15.4 
2026-09-16 00:00 UT   09 25 33.2   +09 38 05     3.965    3.163   32.5    9.8   280   15.5 
2026-09-17 00:00 UT   09 26 46.7   +09 30 24     3.957    3.164   33.1   10.0   280   15.5 
2026-09-18 00:00 UT   09 27 60.0   +09 22 42     3.950    3.164   33.8   10.2   280   15.5 
2026-09-19 00:00 UT   09 29 12.9   +09 14 58     3.941    3.164   34.4   10.3   281   15.5 
2026-09-20 00:00 UT   09 30 25.6   +09 07 14     3.933    3.164   35.1   10.5   281   15.5 
2026-09-21 00:00 UT   09 31 37.9   +08 59 28     3.925    3.164   35.7   10.7   281   15.5 
2026-09-22 00:00 UT   09 32 49.8   +08 51 40     3.917    3.165   36.4   10.8   281   15.5 
2026-09-23 00:00 UT   09 34 01.5   +08 43 52     3.908    3.165   37.0   11.0   281   15.5 
2026-09-24 00:00 UT   09 35 12.8   +08 36 03     3.899    3.165   37.7   11.2   282   15.5 
2026-09-25 00:00 UT   09 36 23.8   +08 28 12     3.890    3.165   38.3   11.3   282   15.5 
2026-09-26 00:00 UT   09 37 34.5   +08 20 21     3.881    3.165   39.0   11.5   282   15.5 
2026-09-27 00:00 UT   09 38 44.8   +08 12 28     3.872    3.165   39.6   11.7   282   15.5 
2026-09-28 00:00 UT   09 39 54.8   +08 04 35     3.863    3.165   40.3   11.8   282   15.5 

    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.