2021 TJ12
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Today	5 Sep 2026	30.7	2.156 AU	2.289 AU	15h23m	-11°50'	69.6°	26.0°

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)                : 0.4160541
            a (Semimajor axis)              : 1.5269828
            i (Inclination)                 : 8.29026
            Ω (Longitude of ascending node) : 201.05291
            ω (Argument of perihelion)      : 231.68435
            M (Mean anomaly)                : 145.66512
            Epoch                           : 2026 Jun 09

            L (Longitude of perihelion)     : 252.44413
            B (Latitude of perihelion)      : -6.49583
            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
2026-09-05 00:00 UT   15 23 28.9   -11 50 05     2.289    2.156   69.6   26.0   102   30.7 
2026-09-05 06:03 UT   15 23 49.5   -11 51 39     2.292    2.156   69.4   26.0   102   30.7 
2026-09-06 00:00 UT   15 24 51.0   -11 56 19     2.300    2.155   69.0   25.9   102   30.7 
2026-09-07 00:00 UT   15 26 13.8   -12 02 33     2.312    2.155   68.4   25.8   102   30.7 
2026-09-08 00:00 UT   15 27 37.3   -12 08 47     2.323    2.154   67.8   25.7   102   30.7 
2026-09-09 00:00 UT   15 29 01.5   -12 14 59     2.334    2.153   67.2   25.5   101   30.7 
2026-09-10 00:00 UT   15 30 26.5   -12 21 11     2.345    2.152   66.6   25.4   101   30.7 
2026-09-11 00:00 UT   15 31 52.1   -12 27 22     2.356    2.152   66.0   25.3   101   30.7 
2026-09-12 00:00 UT   15 33 18.4   -12 33 32     2.367    2.151   65.4   25.2   101   30.7 
2026-09-13 00:00 UT   15 34 45.4   -12 39 40     2.377    2.150   64.8   25.0   101   30.7 
2026-09-14 00:00 UT   15 36 13.1   -12 45 48     2.388    2.149   64.2   24.9   100   30.8 
2026-09-15 00:00 UT   15 37 41.4   -12 51 54     2.399    2.149   63.6   24.8   100   30.8 
2026-09-16 00:00 UT   15 39 10.4   -12 57 58     2.409    2.148   63.0   24.6   100   30.8 
2026-09-17 00:00 UT   15 40 40.0   -13 04 01     2.419    2.147   62.4   24.5   100   30.8 
2026-09-18 00:00 UT   15 42 10.3   -13 10 02     2.430    2.146   61.8   24.4   100   30.8 
2026-09-19 00:00 UT   15 43 41.2   -13 16 01     2.440    2.145   61.2   24.2    99   30.8 
2026-09-20 00:00 UT   15 45 12.7   -13 21 59     2.450    2.144   60.6   24.1    99   30.8 
2026-09-21 00:00 UT   15 46 44.8   -13 27 55     2.460    2.143   60.0   23.9    99   30.8 
2026-09-22 00:00 UT   15 48 17.6   -13 33 48     2.470    2.142   59.4   23.8    99   30.8 
2026-09-23 00:00 UT   15 49 51.0   -13 39 40     2.480    2.141   58.9   23.7    99   30.8 
2026-09-24 00:00 UT   15 51 24.9   -13 45 29     2.490    2.140   58.3   23.5    98   30.8 
2026-09-25 00:00 UT   15 52 59.5   -13 51 16     2.499    2.139   57.7   23.4    98   30.8 
2026-09-26 00:00 UT   15 54 34.6   -13 57 01     2.509    2.138   57.1   23.2    98   30.8 
2026-09-27 00:00 UT   15 56 10.4   -14 02 43     2.518    2.136   56.6   23.0    98   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.