2021 TJ12
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Today	23 Feb 2026	29.4	1.769 AU	1.399 AU	15h52m	-19°14'	94.0°	33.9°

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 TJ12 are:

            e (Eccentricity)                : 0.4161233
            a (Semimajor axis)              : 1.5269819
            i (Inclination)                 : 8.29054
            Ω (Longitude of ascending node) : 201.05432
            ω (Argument of perihelion)      : 231.68330
            M (Mean anomaly)                : 41.18871
            Epoch                           : 2025 Nov 21

            L (Longitude of perihelion)     : 252.44447
            B (Latitude of perihelion)      : -6.49595
            P (Orbital period in years)     : 1.89            
        

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
2026-02-23 00:00 UT   15 52 17.0   -19 14 54     1.399    1.769   94.0   33.9   282   29.4 
2026-02-23 10:24 UT   15 52 42.4   -19 14 17     1.396    1.771   94.3   33.9   282   29.4 
2026-02-24 00:00 UT   15 53 15.0   -19 13 25     1.391    1.773   94.8   33.8   282   29.4 
2026-02-25 00:00 UT   15 54 11.0   -19 11 46     1.384    1.778   95.6   33.7   282   29.4 
2026-02-26 00:00 UT   15 55 05.1   -19 09 58     1.376    1.782   96.4   33.5   282   29.4 
2026-02-27 00:00 UT   15 55 57.2   -19 07 59     1.369    1.787   97.2   33.4   282   29.4 
2026-02-28 00:00 UT   15 56 47.2   -19 05 51     1.361    1.791   98.0   33.2   282   29.4 
2026-03-01 00:00 UT   15 57 35.2   -19 03 33     1.354    1.796   98.8   33.0   281   29.4 
2026-03-02 00:00 UT   15 58 21.1   -19 01 05     1.346    1.800   99.6   32.9   281   29.4 
2026-03-03 00:00 UT   15 59 04.8   -18 58 28     1.338    1.805  100.5   32.7   281   29.3 
2026-03-04 00:00 UT   15 59 46.5   -18 55 40     1.331    1.809  101.3   32.5   281   29.3 
2026-03-05 00:00 UT   16 00 25.9   -18 52 43     1.323    1.813  102.2   32.3   281   29.3 
2026-03-06 00:00 UT   16 01 03.1   -18 49 36     1.315    1.818  103.1   32.1   281   29.3 
2026-03-07 00:00 UT   16 01 38.1   -18 46 19     1.308    1.822  103.9   31.9   281   29.3 
2026-03-08 00:00 UT   16 02 10.8   -18 42 51     1.300    1.826  104.8   31.7   281   29.3 
2026-03-09 00:00 UT   16 02 41.1   -18 39 14     1.292    1.831  105.7   31.5   281   29.3 
2026-03-10 00:00 UT   16 03 09.2   -18 35 27     1.285    1.835  106.6   31.2   281   29.2 
2026-03-11 00:00 UT   16 03 34.8   -18 31 29     1.277    1.839  107.5   31.0   280   29.2 
2026-03-12 00:00 UT   16 03 58.0   -18 27 21     1.270    1.843  108.4   30.8   280   29.2 
2026-03-13 00:00 UT   16 04 18.7   -18 23 03     1.262    1.847  109.4   30.5   280   29.2 
2026-03-14 00:00 UT   16 04 37.0   -18 18 35     1.254    1.851  110.3   30.2   280   29.2 
2026-03-15 00:00 UT   16 04 52.7   -18 13 56     1.247    1.856  111.3   30.0   280   29.2 
2026-03-16 00:00 UT   16 05 05.9   -18 09 07     1.239    1.860  112.2   29.7   280   29.2 
2026-03-17 00:00 UT   16 05 16.5   -18 04 08     1.232    1.864  113.2   29.4   280   29.1 
2026-03-18 00:00 UT   16 05 24.5   -17 58 58     1.225    1.868  114.2   29.1   280   29.1 
2026-03-19 00:00 UT   16 05 29.9   -17 53 38     1.217    1.872  115.2   28.8   280   29.1 
2026-03-20 00:00 UT   16 05 32.6   -17 48 07     1.210    1.876  116.2   28.5   280   29.1 
2026-03-21 00:00 UT   16 05 32.6   -17 42 26     1.203    1.880  117.2   28.1   279   29.1 
2026-03-22 00:00 UT   16 05 29.9   -17 36 34     1.196    1.883  118.2   27.8   279   29.0 
2026-03-23 00:00 UT   16 05 24.5   -17 30 32     1.189    1.887  119.2   27.4   279   29.0 
2026-03-24 00:00 UT   16 05 16.3   -17 24 19     1.182    1.891  120.2   27.1   279   29.0 
2026-03-25 00:00 UT   16 05 05.4   -17 17 56     1.175    1.895  121.3   26.7   279   29.0 

    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.