2021 TJ12
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Today	22 Aug 2026	30.6	2.161 AU	2.124 AU	15h05m	-10°22'	78.4°	27.3°

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
2026-08-22 00:00 UT   15 05 38.4   -10 22 32     2.124    2.161   78.4   27.3   105   30.6 
2026-08-22 06:08 UT   15 05 56.6   -10 24 07     2.127    2.161   78.3   27.3   105   30.6 
2026-08-23 00:00 UT   15 06 49.7   -10 28 45     2.136    2.161   77.8   27.2   104   30.6 
2026-08-24 00:00 UT   15 08 01.8   -10 34 58     2.148    2.161   77.1   27.1   104   30.6 
2026-08-25 00:00 UT   15 09 14.7   -10 41 12     2.160    2.161   76.5   27.1   104   30.6 
2026-08-26 00:00 UT   15 10 28.5   -10 47 27     2.172    2.160   75.9   27.0   104   30.6 
2026-08-27 00:00 UT   15 11 43.0   -10 53 42     2.184    2.160   75.2   26.9   104   30.6 
2026-08-28 00:00 UT   15 12 58.3   -10 59 57     2.196    2.160   74.6   26.8   104   30.6 
2026-08-29 00:00 UT   15 14 14.4   -11 06 13     2.208    2.159   74.0   26.7   103   30.6 
2026-08-30 00:00 UT   15 15 31.3   -11 12 29     2.220    2.159   73.3   26.6   103   30.7 
2026-08-31 00:00 UT   15 16 48.9   -11 18 45     2.232    2.158   72.7   26.5   103   30.7 
2026-09-01 00:00 UT   15 18 07.3   -11 25 01     2.243    2.158   72.1   26.4   103   30.7 
2026-09-02 00:00 UT   15 19 26.5   -11 31 17     2.255    2.158   71.5   26.3   103   30.7 
2026-09-03 00:00 UT   15 20 46.4   -11 37 33     2.266    2.157   70.8   26.2   103   30.7 
2026-09-04 00:00 UT   15 22 07.0   -11 43 49     2.278    2.156   70.2   26.1   102   30.7 
2026-09-05 00:00 UT   15 23 28.3   -11 50 04     2.289    2.156   69.6   26.0   102   30.7 
2026-09-06 00:00 UT   15 24 50.4   -11 56 18     2.300    2.155   69.0   25.9   102   30.7 
2026-09-07 00:00 UT   15 26 13.2   -12 02 32     2.312    2.155   68.4   25.8   102   30.7 
2026-09-08 00:00 UT   15 27 36.7   -12 08 46     2.323    2.154   67.8   25.7   102   30.7 
2026-09-09 00:00 UT   15 29 01.0   -12 14 59     2.334    2.153   67.2   25.5   101   30.7 
2026-09-10 00:00 UT   15 30 25.9   -12 21 10     2.345    2.153   66.6   25.4   101   30.7 
2026-09-11 00:00 UT   15 31 51.5   -12 27 21     2.356    2.152   66.0   25.3   101   30.7 
2026-09-12 00:00 UT   15 33 17.8   -12 33 31     2.367    2.151   65.4   25.2   101   30.7 
2026-09-13 00:00 UT   15 34 44.8   -12 39 39     2.377    2.150   64.8   25.0   101   30.7 
2026-09-14 00:00 UT   15 36 12.5   -12 45 47     2.388    2.150   64.2   24.9   100   30.8 
2026-09-15 00:00 UT   15 37 40.8   -12 51 53     2.399    2.149   63.6   24.8   100   30.8 

    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.