2021 TK10
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Today	16 Jul 2026	30.1	2.233 AU	1.235 AU	18h42m	-15°39'	165.3°	6.6°

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
2026-07-16 00:00 UT   18 42 48.3   -15 39 25     1.235    2.233  165.3    6.6   115   30.1 
2026-07-16 14:48 UT   18 41 52.0   -15 40 33     1.233    2.229  164.6    7.0   114   30.1 
2026-07-17 00:00 UT   18 41 17.0   -15 41 17     1.232    2.227  164.1    7.2   113   30.1 
2026-07-18 00:00 UT   18 39 46.1   -15 43 11     1.231    2.222  163.0    7.7   111   30.1 
2026-07-19 00:00 UT   18 38 15.8   -15 45 08     1.229    2.217  161.8    8.2   109   30.2 
2026-07-20 00:00 UT   18 36 46.2   -15 47 08     1.228    2.212  160.6    8.8   108   30.2 
2026-07-21 00:00 UT   18 35 17.3   -15 49 10     1.227    2.207  159.3    9.3   106   30.2 
2026-07-22 00:00 UT   18 33 49.2   -15 51 14     1.226    2.201  158.1    9.9   105   30.2 
2026-07-23 00:00 UT   18 32 22.2   -15 53 21     1.225    2.196  156.9   10.5   104   30.2 
2026-07-24 00:00 UT   18 30 56.2   -15 55 29     1.225    2.191  155.7   11.0   103   30.2 
2026-07-25 00:00 UT   18 29 31.4   -15 57 40     1.225    2.185  154.4   11.6   103   30.2 
2026-07-26 00:00 UT   18 28 07.8   -15 59 52     1.225    2.180  153.2   12.1   102   30.3 
2026-07-27 00:00 UT   18 26 45.6   -16 02 07     1.225    2.175  152.0   12.7   101   30.3 
2026-07-28 00:00 UT   18 25 24.8   -16 04 23     1.226    2.169  150.7   13.2   101   30.3 
2026-07-29 00:00 UT   18 24 05.5   -16 06 41     1.227    2.164  149.5   13.8   100   30.3 
2026-07-30 00:00 UT   18 22 47.8   -16 09 01     1.228    2.158  148.3   14.3    99   30.3 
2026-07-31 00:00 UT   18 21 31.7   -16 11 23     1.229    2.153  147.0   14.9    99   30.3 
2026-08-01 00:00 UT   18 20 17.4   -16 13 46     1.231    2.147  145.8   15.4    99   30.4 
2026-08-02 00:00 UT   18 19 04.9   -16 16 11     1.232    2.142  144.6   15.9    98   30.4 
2026-08-03 00:00 UT   18 17 54.3   -16 18 37     1.234    2.136  143.4   16.4    98   30.4 
2026-08-04 00:00 UT   18 16 45.6   -16 21 05     1.236    2.131  142.2   17.0    97   30.4 
2026-08-05 00:00 UT   18 15 38.9   -16 23 35     1.239    2.125  141.0   17.5    97   30.4 
2026-08-06 00:00 UT   18 14 34.3   -16 26 06     1.241    2.120  139.8   18.0    97   30.4 
2026-08-07 00:00 UT   18 13 31.8   -16 28 39     1.244    2.114  138.6   18.5    97   30.5 
2026-08-08 00:00 UT   18 12 31.4   -16 31 13     1.247    2.108  137.4   19.0    96   30.5 
2026-08-09 00:00 UT   18 11 33.3   -16 33 49     1.250    2.103  136.3   19.5    96   30.5 
2026-08-10 00:00 UT   18 10 37.4   -16 36 26     1.253    2.097  135.1   19.9    96   30.5 
2026-08-11 00:00 UT   18 09 43.9   -16 39 04     1.256    2.091  134.0   20.4    96   30.5 
2026-08-12 00:00 UT   18 08 52.7   -16 41 44     1.260    2.085  132.8   20.9    95   30.5 
2026-08-13 00:00 UT   18 08 03.9   -16 44 24     1.263    2.080  131.7   21.3    95   30.5 

    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.