2021 TJ12
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Today	8 Apr 2026	28.7	1.946 AU	1.089 AU	15h57m	-15°30'	137.0°	20.5°

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
2026-04-08 00:00 UT   15 57 42.5   -15 30 28     1.089    1.946  137.0   20.5   276   28.7 
2026-04-08 13:24 UT   15 57 13.7   -15 25 30     1.086    1.947  137.7   20.2   276   28.7 
2026-04-09 00:00 UT   15 56 50.3   -15 21 32     1.084    1.949  138.2   20.0   276   28.7 
2026-04-10 00:00 UT   15 55 55.5   -15 12 27     1.079    1.952  139.5   19.5   276   28.7 
2026-04-11 00:00 UT   15 54 58.1   -15 03 13     1.075    1.956  140.7   18.9   276   28.6 
2026-04-12 00:00 UT   15 53 58.0   -14 53 50     1.070    1.959  141.9   18.4   275   28.6 
2026-04-13 00:00 UT   15 52 55.5   -14 44 19     1.066    1.962  143.1   17.8   275   28.6 
2026-04-14 00:00 UT   15 51 50.5   -14 34 39     1.062    1.966  144.4   17.3   275   28.6 
2026-04-15 00:00 UT   15 50 43.1   -14 24 51     1.058    1.969  145.6   16.7   274   28.5 
2026-04-16 00:00 UT   15 49 33.3   -14 14 56     1.054    1.972  146.9   16.1   274   28.5 
2026-04-17 00:00 UT   15 48 21.2   -14 04 53     1.050    1.975  148.1   15.6   273   28.5 
2026-04-18 00:00 UT   15 47 07.0   -13 54 43     1.047    1.978  149.4   15.0   273   28.5 
2026-04-19 00:00 UT   15 45 50.6   -13 44 28     1.044    1.982  150.7   14.4   272   28.4 
2026-04-20 00:00 UT   15 44 32.2   -13 34 06     1.041    1.985  152.0   13.8   271   28.4 
2026-04-21 00:00 UT   15 43 11.9   -13 23 39     1.038    1.988  153.2   13.2   271   28.4 
2026-04-22 00:00 UT   15 41 49.7   -13 13 07     1.036    1.991  154.5   12.5   270   28.4 
2026-04-23 00:00 UT   15 40 25.8   -13 02 31     1.034    1.994  155.8   11.9   269   28.3 
2026-04-24 00:00 UT   15 39 00.3   -12 51 51     1.032    1.997  157.1   11.3   268   28.3 
2026-04-25 00:00 UT   15 37 33.2   -12 41 07     1.030    2.000  158.4   10.7   267   28.3 
2026-04-26 00:00 UT   15 36 04.8   -12 30 22     1.029    2.003  159.6   10.1   265   28.3 
2026-04-27 00:00 UT   15 34 35.0   -12 19 34     1.027    2.006  160.9    9.5   264   28.2 
2026-04-28 00:00 UT   15 33 04.1   -12 08 45     1.027    2.009  162.1    8.8   262   28.2 
2026-04-29 00:00 UT   15 31 32.1   -11 57 55     1.026    2.011  163.4    8.2   260   28.2 
2026-04-30 00:00 UT   15 29 59.2   -11 47 05     1.025    2.014  164.6    7.6   258   28.2 
2026-05-01 00:00 UT   15 28 25.4   -11 36 16     1.025    2.017  165.8    7.1   255   28.1 

    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.