2021 TK10
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Today	12 Feb 2026	33.1	2.777 AU	3.318 AU	18h15m	-20°23'	49.3°	15.6°

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 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
2026-02-12 00:00 UT   18 15 38.7   -20 23 08     3.318    2.777   49.3   15.6   271   33.1 
2026-02-12 00:57 UT   18 15 42.0   -20 23 05     3.317    2.777   49.3   15.6   271   33.1 
2026-02-13 00:00 UT   18 17 03.0   -20 21 44     3.305    2.775   50.0   15.8   271   33.1 
2026-02-14 00:00 UT   18 18 26.9   -20 20 16     3.291    2.773   50.7   16.0   271   33.1 
2026-02-15 00:00 UT   18 19 50.5   -20 18 45     3.278    2.771   51.3   16.2   270   33.1 
2026-02-16 00:00 UT   18 21 13.7   -20 17 11     3.265    2.769   52.0   16.3   270   33.1 
2026-02-17 00:00 UT   18 22 36.6   -20 15 34     3.251    2.767   52.7   16.5   270   33.1 
2026-02-18 00:00 UT   18 23 59.0   -20 13 53     3.237    2.764   53.4   16.7   270   33.1 
2026-02-19 00:00 UT   18 25 21.1   -20 12 09     3.224    2.762   54.1   16.8   270   33.0 
2026-02-20 00:00 UT   18 26 42.8   -20 10 21     3.210    2.760   54.8   17.0   270   33.0 
2026-02-21 00:00 UT   18 28 04.1   -20 08 31     3.196    2.758   55.5   17.2   269   33.0 
2026-02-22 00:00 UT   18 29 25.0   -20 06 37     3.182    2.756   56.1   17.3   269   33.0 
2026-02-23 00:00 UT   18 30 45.4   -20 04 41     3.167    2.754   56.8   17.5   269   33.0 
2026-02-24 00:00 UT   18 32 05.4   -20 02 41     3.153    2.751   57.5   17.7   269   33.0 
2026-02-25 00:00 UT   18 33 25.0   -20 00 38     3.139    2.749   58.2   17.8   269   33.0 
2026-02-26 00:00 UT   18 34 44.1   -19 58 32     3.124    2.747   58.9   18.0   268   33.0 
2026-02-27 00:00 UT   18 36 02.8   -19 56 24     3.109    2.745   59.6   18.1   268   33.0 
2026-02-28 00:00 UT   18 37 21.0   -19 54 12     3.095    2.742   60.3   18.3   268   33.0 
2026-03-01 00:00 UT   18 38 38.7   -19 51 58     3.080    2.740   61.0   18.4   268   33.0 
2026-03-02 00:00 UT   18 39 56.0   -19 49 41     3.065    2.738   61.7   18.6   268   33.0 
2026-03-03 00:00 UT   18 41 12.8   -19 47 21     3.050    2.735   62.4   18.7   268   33.0 
2026-03-04 00:00 UT   18 42 29.1   -19 44 58     3.035    2.733   63.1   18.9   267   33.0 
2026-03-05 00:00 UT   18 43 44.9   -19 42 33     3.019    2.731   63.8   19.0   267   32.9 
2026-03-06 00:00 UT   18 45 00.2   -19 40 05     3.004    2.728   64.5   19.2   267   32.9 
2026-03-07 00:00 UT   18 46 14.9   -19 37 34     2.989    2.726   65.2   19.3   267   32.9 
2026-03-08 00:00 UT   18 47 29.2   -19 35 01     2.973    2.723   65.9   19.4   267   32.9 
2026-03-09 00:00 UT   18 48 42.9   -19 32 25     2.958    2.721   66.6   19.6   267   32.9 
2026-03-10 00:00 UT   18 49 56.0   -19 29 47     2.942    2.718   67.3   19.7   266   32.9 
2026-03-11 00:00 UT   18 51 08.6   -19 27 07     2.926    2.716   68.0   19.8   266   32.9 

    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.