2021 TK10
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Today	2 May 2026	32.1	2.558 AU	2.057 AU	19h35m	-16°39'	108.2°	22.0°

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
2026-05-02 00:00 UT   19 35 40.1   -16 39 44     2.057    2.558  108.2   22.0   259   32.1 
2026-05-02 04:24 UT   19 35 44.4   -16 39 09     2.054    2.557  108.4   22.0   259   32.1 
2026-05-03 00:00 UT   19 36 02.7   -16 36 35     2.041    2.555  109.1   21.9   259   32.0 
2026-05-04 00:00 UT   19 36 23.8   -16 33 28     2.024    2.551  110.0   21.8   259   32.0 
2026-05-05 00:00 UT   19 36 43.5   -16 30 24     2.008    2.547  110.9   21.7   259   32.0 
2026-05-06 00:00 UT   19 37 01.7   -16 27 21     1.991    2.544  111.7   21.6   259   32.0 
2026-05-07 00:00 UT   19 37 18.4   -16 24 20     1.975    2.540  112.6   21.5   258   31.9 
2026-05-08 00:00 UT   19 37 33.5   -16 21 22     1.959    2.536  113.5   21.4   258   31.9 
2026-05-09 00:00 UT   19 37 47.1   -16 18 26     1.943    2.533  114.4   21.3   258   31.9 
2026-05-10 00:00 UT   19 37 59.1   -16 15 33     1.927    2.529  115.3   21.2   258   31.9 
2026-05-11 00:00 UT   19 38 09.5   -16 12 41     1.911    2.525  116.2   21.0   258   31.8 
2026-05-12 00:00 UT   19 38 18.3   -16 09 53     1.895    2.522  117.2   20.9   258   31.8 
2026-05-13 00:00 UT   19 38 25.3   -16 07 08     1.879    2.518  118.1   20.7   258   31.8 
2026-05-14 00:00 UT   19 38 30.7   -16 04 25     1.864    2.514  119.0   20.6   257   31.8 
2026-05-15 00:00 UT   19 38 34.4   -16 01 46     1.848    2.510  119.9   20.4   257   31.7 
2026-05-16 00:00 UT   19 38 36.4   -15 59 09     1.833    2.506  120.9   20.3   257   31.7 
2026-05-17 00:00 UT   19 38 36.5   -15 56 36     1.817    2.503  121.8   20.1   257   31.7 
2026-05-18 00:00 UT   19 38 34.9   -15 54 06     1.802    2.499  122.8   19.9   257   31.7 
2026-05-19 00:00 UT   19 38 31.5   -15 51 40     1.787    2.495  123.7   19.7   257   31.6 
2026-05-20 00:00 UT   19 38 26.3   -15 49 17     1.772    2.491  124.7   19.5   257   31.6 
2026-05-21 00:00 UT   19 38 19.2   -15 46 58     1.757    2.487  125.7   19.3   256   31.6 
2026-05-22 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 

    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.