(550) Senta
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Today	3 Jul 2025	14.7	2.504 AU	3.246 AU	04h06m	+26°01'	36.6°	14.0°
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)                : 0.2220661
            a (Semimajor axis)              : 2.5885514
            i (Inclination)                 : 10.10687
            Ω (Longitude of ascending node) : 270.65941
            ω (Argument of perihelion)      : 45.21240
            M (Mean anomaly)                : 54.95804
            Epoch                           : 2025 May 05

            L (Longitude of perihelion)     : 315.42378
            B (Latitude of perihelion)      : 7.15452
            P (Orbital period in years)     : 4.16            
        

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. A more printer-friendly version of the same chart can be found below.

Ephemerides:

Date       Time       RA (2000)    DEC (2000)    delta   radius  elong  phase   PA    magn
2025-07-03 00:00 UT   04 06 56.8   +26 01 21     3.246    2.504   36.6   14.0   266   14.7 
2025-07-03 05:25 UT   04 07 21.3   +26 02 14     3.244    2.504   36.7   14.0   266   14.7 
2025-07-04 00:00 UT   04 08 45.5   +26 05 14     3.241    2.506   37.1   14.2   266   14.7 
2025-07-05 00:00 UT   04 10 34.0   +26 09 02     3.235    2.508   37.6   14.3   266   14.7 
2025-07-06 00:00 UT   04 12 22.1   +26 12 45     3.230    2.511   38.2   14.5   266   14.7 
2025-07-07 00:00 UT   04 14 09.9   +26 16 22     3.225    2.513   38.7   14.7   266   14.7 
2025-07-08 00:00 UT   04 15 57.5   +26 19 55     3.219    2.516   39.3   14.8   266   14.7 
2025-07-09 00:00 UT   04 17 44.6   +26 23 23     3.214    2.518   39.8   15.0   266   14.7 
2025-07-10 00:00 UT   04 19 31.5   +26 26 45     3.208    2.521   40.3   15.1   266   14.7 
2025-07-11 00:00 UT   04 21 18.0   +26 30 03     3.202    2.523   40.9   15.3   266   14.7 
2025-07-12 00:00 UT   04 23 04.1   +26 33 16     3.196    2.525   41.4   15.4   266   14.7 
2025-07-13 00:00 UT   04 24 50.0   +26 36 23     3.190    2.528   42.0   15.6   266   14.7 
2025-07-14 00:00 UT   04 26 35.4   +26 39 26     3.184    2.530   42.5   15.8   266   14.7 
2025-07-15 00:00 UT   04 28 20.5   +26 42 24     3.178    2.533   43.1   15.9   266   14.7 
2025-07-16 00:00 UT   04 30 05.2   +26 45 17     3.172    2.535   43.6   16.1   266   14.7 
2025-07-17 00:00 UT   04 31 49.5   +26 48 05     3.165    2.538   44.2   16.2   266   14.7 
2025-07-18 00:00 UT   04 33 33.5   +26 50 49     3.159    2.540   44.8   16.4   266   14.7 
2025-07-19 00:00 UT   04 35 17.0   +26 53 27     3.152    2.542   45.3   16.5   267   14.7 
2025-07-20 00:00 UT   04 37 00.2   +26 56 01     3.145    2.545   45.9   16.7   267   14.7 
2025-07-21 00:00 UT   04 38 42.9   +26 58 30     3.139    2.547   46.4   16.8   267   14.7 
2025-07-22 00:00 UT   04 40 25.2   +27 00 54     3.132    2.550   47.0   16.9   267   14.8 
2025-07-23 00:00 UT   04 42 07.0   +27 03 14     3.125    2.552   47.6   17.1   267   14.8 
2025-07-24 00:00 UT   04 43 48.4   +27 05 29     3.117    2.554   48.2   17.2   267   14.8 

    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.