2021 TK10
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Today	2 Jul 2026	30.1	2.303 AU	1.293 AU	19h03m	-15°18'	170.8°	4.1°

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
2026-07-02 00:00 UT   19 03 52.3   -15 18 58     1.293    2.303  170.8    4.1   212   30.1 
2026-07-02 15:06 UT   19 02 58.1   -15 19 37     1.290    2.299  171.2    3.9   208   30.1 
2026-07-03 00:00 UT   19 02 26.0   -15 20 01     1.287    2.298  171.5    3.8   205   30.1 
2026-07-04 00:00 UT   19 00 58.8   -15 21 09     1.282    2.293  172.1    3.5   197   30.1 
2026-07-05 00:00 UT   18 59 30.6   -15 22 20     1.276    2.288  172.5    3.3   188   30.1 
2026-07-06 00:00 UT   18 58 01.6   -15 23 36     1.271    2.283  172.6    3.3   178   30.0 
2026-07-07 00:00 UT   18 56 31.9   -15 24 55     1.266    2.278  172.6    3.3   168   30.0 
2026-07-08 00:00 UT   18 55 01.6   -15 26 18     1.262    2.273  172.3    3.4   158   30.0 
2026-07-09 00:00 UT   18 53 30.7   -15 27 45     1.257    2.268  171.9    3.6   149   30.0 
2026-07-10 00:00 UT   18 51 59.4   -15 29 15     1.253    2.263  171.2    3.9   142   30.0 
2026-07-11 00:00 UT   18 50 27.7   -15 30 49     1.249    2.258  170.4    4.3   135   30.0 
2026-07-12 00:00 UT   18 48 55.8   -15 32 26     1.246    2.253  169.5    4.7   130   30.0 
2026-07-13 00:00 UT   18 47 23.8   -15 34 06     1.243    2.248  168.5    5.2   125   30.1 
2026-07-14 00:00 UT   18 45 51.8   -15 35 49     1.240    2.243  167.5    5.6   121   30.1 
2026-07-15 00:00 UT   18 44 20.0   -15 37 35     1.237    2.238  166.4    6.1   118   30.1 
2026-07-16 00:00 UT   18 42 48.3   -15 39 25     1.235    2.233  165.3    6.6   115   30.1 
2026-07-17 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 

    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.