2021 TK10
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Today	6 Dec 2025	32.8	2.870 AU	3.850 AU	16h33m	-19°31'	4.8°	1.7°

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 2021 TK10 are:

            e (Eccentricity)                : 0.5135835
            a (Semimajor axis)              : 1.9056152
            i (Inclination)                 : 4.08407
            Ω (Longitude of ascending node) : 196.56217
            ω (Argument of perihelion)      : 225.95684
            M (Mean anomaly)                : 189.42056
            Epoch                           : 2025 Nov 21

            L (Longitude of perihelion)     : 242.44621
            B (Latitude of perihelion)      : -2.93449
            P (Orbital period in years)     : 2.63            
        

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
2025-12-06 00:00 UT   16 33 00.9   -19 31 23     3.850    2.870    4.8    1.7   308   32.8 
2025-12-06 14:06 UT   16 33 55.0   -19 33 05     3.849    2.869    5.2    1.8   306   32.8 
2025-12-07 00:00 UT   16 34 32.9   -19 34 16     3.848    2.869    5.4    1.9   304   32.8 
2025-12-08 00:00 UT   16 36 05.1   -19 37 05     3.846    2.868    6.0    2.1   302   32.9 
2025-12-09 00:00 UT   16 37 37.3   -19 39 51     3.844    2.867    6.6    2.3   299   32.9 
2025-12-10 00:00 UT   16 39 09.6   -19 42 33     3.841    2.866    7.2    2.5   297   32.9 
2025-12-11 00:00 UT   16 40 41.9   -19 45 12     3.838    2.866    7.8    2.7   296   32.9 
2025-12-12 00:00 UT   16 42 14.3   -19 47 47     3.835    2.865    8.5    2.9   294   32.9 
2025-12-13 00:00 UT   16 43 46.7   -19 50 18     3.832    2.864    9.1    3.1   293   32.9 
2025-12-14 00:00 UT   16 45 19.2   -19 52 46     3.829    2.863    9.7    3.3   292   32.9 
2025-12-15 00:00 UT   16 46 51.8   -19 55 10     3.825    2.862   10.4    3.5   291   32.9 
2025-12-16 00:00 UT   16 48 24.4   -19 57 30     3.821    2.861   11.0    3.8   290   32.9 
2025-12-17 00:00 UT   16 49 57.0   -19 59 47     3.817    2.860   11.6    4.0   289   33.0 
2025-12-18 00:00 UT   16 51 29.6   -20 01 60     3.813    2.859   12.3    4.2   288   33.0 
2025-12-19 00:00 UT   16 53 02.3   -20 04 09     3.809    2.858   12.9    4.4   287   33.0 
2025-12-20 00:00 UT   16 54 34.9   -20 06 14     3.805    2.857   13.6    4.6   287   33.0 
2025-12-21 00:00 UT   16 56 07.6   -20 08 15     3.800    2.856   14.2    4.8   286   33.0 
2025-12-22 00:00 UT   16 57 40.3   -20 10 13     3.795    2.855   14.8    5.1   286   33.0 
2025-12-23 00:00 UT   16 59 12.9   -20 12 06     3.790    2.854   15.5    5.3   285   33.0 
2025-12-24 00:00 UT   17 00 45.6   -20 13 56     3.785    2.853   16.1    5.5   284   33.0 
2025-12-25 00:00 UT   17 02 18.2   -20 15 42     3.780    2.852   16.8    5.7   284   33.0 
2025-12-26 00:00 UT   17 03 50.9   -20 17 24     3.774    2.851   17.4    5.9   284   33.0 
2025-12-27 00:00 UT   17 05 23.4   -20 19 02     3.769    2.850   18.1    6.1   283   33.0 
2025-12-28 00:00 UT   17 06 56.0   -20 20 37     3.763    2.849   18.7    6.4   283   33.0 
2025-12-29 00:00 UT   17 08 28.5   -20 22 07     3.757    2.848   19.4    6.6   282   33.0 

    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.