2021 TJ12
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Today	29 Apr 2026	28.2	2.011 AU	1.026 AU	15h31m	-11°57'	163.4°	8.2°

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
2026-04-29 00:00 UT   15 31 32.1   -11 57 55     1.026    2.011  163.4    8.2   260   28.2 
2026-04-29 14:21 UT   15 30 36.6   -11 51 27     1.026    2.013  164.1    7.9   259   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 
2026-05-02 00:00 UT   15 26 50.9   -11 25 28     1.025    2.020  166.9    6.5   252   28.1 
2026-05-03 00:00 UT   15 25 15.8   -11 14 42     1.026    2.023  168.0    5.9   248   28.1 
2026-05-04 00:00 UT   15 23 40.3   -11 03 59     1.026    2.025  169.0    5.4   243   28.1 
2026-05-05 00:00 UT   15 22 04.5   -10 53 19     1.027    2.028  170.0    5.0   238   28.1 
2026-05-06 00:00 UT   15 20 28.4   -10 42 44     1.029    2.031  170.8    4.6   231   28.0 
2026-05-07 00:00 UT   15 18 52.3   -10 32 13     1.030    2.033  171.5    4.2   223   28.0 
2026-05-08 00:00 UT   15 17 16.1   -10 21 47     1.032    2.036  172.0    4.0   214   28.0 
2026-05-09 00:00 UT   15 15 40.2   -10 11 28     1.034    2.038  172.3    3.8   205   28.0 
2026-05-10 00:00 UT   15 14 04.5   -10 01 16     1.036    2.041  172.3    3.8   194   28.0 
2026-05-11 00:00 UT   15 12 29.3   -09 51 11     1.039    2.044  172.1    3.9   184   28.0 
2026-05-12 00:00 UT   15 10 54.6   -09 41 15     1.041    2.046  171.7    4.1   175   28.1 
2026-05-13 00:00 UT   15 09 20.5   -09 31 28     1.045    2.049  171.0    4.4   167   28.1 
2026-05-14 00:00 UT   15 07 47.2   -09 21 50     1.048    2.051  170.3    4.8   160   28.1 
2026-05-15 00:00 UT   15 06 14.9   -09 12 23     1.052    2.053  169.4    5.2   154   28.2 
2026-05-16 00:00 UT   15 04 43.5   -09 03 06     1.055    2.056  168.4    5.7   149   28.2 
2026-05-17 00:00 UT   15 03 13.2   -08 54 02     1.060    2.058  167.3    6.2   145   28.2 
2026-05-18 00:00 UT   15 01 44.2   -08 45 09     1.064    2.061  166.2    6.7   142   28.3 
2026-05-19 00:00 UT   15 00 16.5   -08 36 29     1.069    2.063  165.1    7.2   139   28.3 

    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.