2021 TK10
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Today	21 May 2026	31.6	2.487 AU	1.757 AU	19h38m	-15°46'	125.7°	19.3°

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
2026-05-21 00:00 UT   19 38 19.2   -15 46 58     1.757    2.487  125.7   19.3   256   31.6 
2026-05-21 10:09 UT   19 38 15.7   -15 46 00     1.751    2.485  126.1   19.2   256   31.6 
2026-05-22 00:00 UT   19 38 10.3   -15 44 43     1.742    2.483  126.7   19.1   256   31.6 
2026-05-23 00:00 UT   19 37 59.5   -15 42 31     1.727    2.479  127.7   18.9   256   31.5 
2026-05-24 00:00 UT   19 37 46.8   -15 40 24     1.713    2.475  128.7   18.6   256   31.5 
2026-05-25 00:00 UT   19 37 32.1   -15 38 20     1.698    2.471  129.7   18.4   256   31.5 
2026-05-26 00:00 UT   19 37 15.6   -15 36 21     1.684    2.467  130.7   18.1   255   31.4 
2026-05-27 00:00 UT   19 36 57.1   -15 34 26     1.670    2.463  131.7   17.9   255   31.4 
2026-05-28 00:00 UT   19 36 36.6   -15 32 35     1.656    2.459  132.7   17.6   255   31.4 
2026-05-29 00:00 UT   19 36 14.2   -15 30 48     1.642    2.455  133.7   17.4   255   31.3 
2026-05-30 00:00 UT   19 35 49.7   -15 29 06     1.629    2.451  134.8   17.1   255   31.3 
2026-05-31 00:00 UT   19 35 23.3   -15 27 28     1.615    2.446  135.8   16.8   254   31.3 
2026-06-01 00:00 UT   19 34 54.8   -15 25 55     1.602    2.442  136.9   16.5   254   31.2 
2026-06-02 00:00 UT   19 34 24.3   -15 24 26     1.589    2.438  137.9   16.2   254   31.2 
2026-06-03 00:00 UT   19 33 51.7   -15 23 02     1.576    2.434  139.0   15.9   254   31.2 
2026-06-04 00:00 UT   19 33 17.1   -15 21 43     1.563    2.430  140.0   15.5   253   31.2 
2026-06-05 00:00 UT   19 32 40.4   -15 20 29     1.551    2.425  141.1   15.2   253   31.1 
2026-06-06 00:00 UT   19 32 01.6   -15 19 19     1.538    2.421  142.2   14.9   253   31.1 
2026-06-07 00:00 UT   19 31 20.8   -15 18 15     1.526    2.417  143.3   14.5   252   31.1 
2026-06-08 00:00 UT   19 30 37.8   -15 17 15     1.514    2.412  144.4   14.2   252   31.0 
2026-06-09 00:00 UT   19 29 52.8   -15 16 21     1.502    2.408  145.5   13.8   252   31.0 
2026-06-10 00:00 UT   19 29 05.7   -15 15 32     1.490    2.404  146.6   13.4   251   30.9 
2026-06-11 00:00 UT   19 28 16.5   -15 14 48     1.479    2.399  147.7   13.1   251   30.9 
2026-06-12 00:00 UT   19 27 25.2   -15 14 09     1.468    2.395  148.9   12.7   250   30.9 
2026-06-13 00:00 UT   19 26 31.9   -15 13 35     1.457    2.391  150.0   12.3   250   30.8 
2026-06-14 00:00 UT   19 25 36.6   -15 13 07     1.446    2.386  151.1   11.9   249   30.8 
2026-06-15 00:00 UT   19 24 39.2   -15 12 44     1.435    2.382  152.3   11.4   249   30.8 
2026-06-16 00:00 UT   19 23 39.8   -15 12 26     1.425    2.377  153.4   11.0   248   30.7 
2026-06-17 00:00 UT   19 22 38.5   -15 12 13     1.415    2.373  154.6   10.6   247   30.7 
2026-06-18 00:00 UT   19 21 35.2   -15 12 06     1.405    2.368  155.7   10.2   247   30.7 
2026-06-19 00:00 UT   19 20 30.1   -15 12 03     1.395    2.364  156.9    9.7   246   30.6 
2026-06-20 00:00 UT   19 19 23.1   -15 12 06     1.386    2.359  158.0    9.3   245   30.6 

    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.