(550) Senta
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Opposition	17 Dec 2025	13.1	2.873 AU	1.889 AU	05h44m	+24°37'	178.4°	0.6°
Today	19 Jan 2026	14.0	2.931 AU	2.097 AU	05h16m	+22°43'	141.4°	12.1°

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
2026-01-19 00:00 UT   05 16 16.9   +22 43 11     2.097    2.931  141.4   12.1    85   14.0 
2026-01-19 08:10 UT   05 16 06.5   +22 42 08     2.100    2.931  141.0   12.2    85   14.0 
2026-01-20 00:00 UT   05 15 46.7   +22 40 06     2.107    2.932  140.2   12.4    85   14.0 
2026-01-21 00:00 UT   05 15 18.2   +22 37 04     2.118    2.934  139.1   12.7    85   14.0 
2026-01-22 00:00 UT   05 14 51.3   +22 34 06     2.130    2.936  138.0   13.0    85   14.1 
2026-01-23 00:00 UT   05 14 26.1   +22 31 11     2.141    2.937  136.9   13.2    85   14.1 
2026-01-24 00:00 UT   05 14 02.6   +22 28 19     2.152    2.939  135.8   13.5    85   14.1 
2026-01-25 00:00 UT   05 13 40.8   +22 25 30     2.164    2.941  134.7   13.8    85   14.1 
2026-01-26 00:00 UT   05 13 20.7   +22 22 45     2.176    2.942  133.6   14.0    85   14.2 
2026-01-27 00:00 UT   05 13 02.2   +22 20 03     2.188    2.944  132.5   14.3    85   14.2 
2026-01-28 00:00 UT   05 12 45.4   +22 17 25     2.200    2.946  131.4   14.5    85   14.2 
2026-01-29 00:00 UT   05 12 30.3   +22 14 51     2.213    2.947  130.3   14.8    85   14.2 
2026-01-30 00:00 UT   05 12 16.9   +22 12 20     2.225    2.949  129.2   15.0    85   14.2 
2026-01-31 00:00 UT   05 12 05.1   +22 09 52     2.238    2.950  128.2   15.2    85   14.3 
2026-02-01 00:00 UT   05 11 55.0   +22 07 29     2.251    2.952  127.1   15.4    85   14.3 
2026-02-02 00:00 UT   05 11 46.5   +22 05 08     2.264    2.954  126.1   15.6    85   14.3 
2026-02-03 00:00 UT   05 11 39.7   +22 02 52     2.277    2.955  125.0   15.9    85   14.3 
2026-02-04 00:00 UT   05 11 34.4   +22 00 39     2.291    2.957  124.0   16.0    85   14.4 
2026-02-05 00:00 UT   05 11 30.8   +21 58 29     2.304    2.959  122.9   16.2    85   14.4 
2026-02-06 00:00 UT   05 11 28.8   +21 56 24     2.318    2.960  121.9   16.4    85   14.4 
2026-02-07 00:00 UT   05 11 28.4   +21 54 21     2.332    2.962  120.9   16.6    85   14.4 
2026-02-08 00:00 UT   05 11 29.5   +21 52 23     2.346    2.963  119.9   16.8    85   14.4 
2026-02-09 00:00 UT   05 11 32.2   +21 50 27     2.360    2.965  118.9   16.9    85   14.5 
2026-02-10 00:00 UT   05 11 36.5   +21 48 36     2.374    2.966  117.9   17.1    85   14.5 
2026-02-11 00:00 UT   05 11 42.3   +21 46 47     2.388    2.968  116.9   17.3    85   14.5 
2026-02-12 00:00 UT   05 11 49.7   +21 45 02     2.402    2.970  115.9   17.4    85   14.5 
2026-02-13 00:00 UT   05 11 58.5   +21 43 21     2.417    2.971  114.9   17.5    85   14.5 
2026-02-14 00:00 UT   05 12 08.9   +21 41 42     2.431    2.973  114.0   17.7    85   14.5 
2026-02-15 00:00 UT   05 12 20.7   +21 40 07     2.446    2.974  113.0   17.8    85   14.6 
2026-02-16 00:00 UT   05 12 34.0   +21 38 35     2.461    2.976  112.0   17.9    85   14.6 
2026-02-17 00:00 UT   05 12 48.8   +21 37 06     2.476    2.977  111.1   18.0    85   14.6 
2026-02-18 00:00 UT   05 13 05.0   +21 35 41     2.490    2.979  110.1   18.2    85   14.6 

    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.