2021 TJ12
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Today	30 Nov 2025	29.2	1.289 AU	1.730 AU	13h09m	-11°13'	47.5°	34.4°

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
2025-11-30 00:00 UT   13 09 20.4   -11 13 33     1.730    1.289   47.5   34.4   289   29.2 
2025-11-30 09:32 UT   13 10 22.3   -11 18 41     1.730    1.291   47.6   34.4   289   29.2 
2025-12-01 00:00 UT   13 11 56.0   -11 26 27     1.731    1.295   47.9   34.4   289   29.2 
2025-12-02 00:00 UT   13 14 30.7   -11 39 10     1.731    1.302   48.2   34.4   289   29.2 
2025-12-03 00:00 UT   13 17 04.5   -11 51 43     1.732    1.308   48.5   34.4   289   29.3 
2025-12-04 00:00 UT   13 19 37.5   -12 04 05     1.732    1.314   48.9   34.4   289   29.3 
2025-12-05 00:00 UT   13 22 09.7   -12 16 17     1.732    1.321   49.3   34.4   289   29.3 
2025-12-06 00:00 UT   13 24 41.1   -12 28 19     1.733    1.327   49.6   34.4   289   29.3 
2025-12-07 00:00 UT   13 27 11.6   -12 40 09     1.733    1.333   50.0   34.5   289   29.3 
2025-12-08 00:00 UT   13 29 41.4   -12 51 50     1.732    1.340   50.4   34.5   289   29.3 
2025-12-09 00:00 UT   13 32 10.3   -13 03 19     1.732    1.346   50.7   34.5   289   29.3 
2025-12-10 00:00 UT   13 34 38.4   -13 14 39     1.732    1.352   51.1   34.5   289   29.3 
2025-12-11 00:00 UT   13 37 05.6   -13 25 47     1.731    1.359   51.5   34.6   289   29.3 
2025-12-12 00:00 UT   13 39 32.1   -13 36 46     1.731    1.365   51.9   34.6   289   29.3 
2025-12-13 00:00 UT   13 41 57.7   -13 47 33     1.730    1.371   52.3   34.6   289   29.4 

    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.