2021 TJ12
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Today	15 May 2026	28.2	2.053 AU	1.052 AU	15h06m	-09°12'	169.4°	5.2°

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
2026-05-15 00:00 UT   15 06 14.9   -09 12 23     1.052    2.053  169.4    5.2   154   28.2 
2026-05-15 18:48 UT   15 05 03.2   -09 05 06     1.055    2.055  168.6    5.6   150   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 
2026-05-20 00:00 UT   14 58 50.2   -08 28 02     1.074    2.065  163.9    7.8   136   28.3 
2026-05-21 00:00 UT   14 57 25.4   -08 19 48     1.079    2.067  162.8    8.3   134   28.4 
2026-05-22 00:00 UT   14 56 02.3   -08 11 49     1.085    2.070  161.6    8.9   132   28.4 
2026-05-23 00:00 UT   14 54 40.8   -08 04 03     1.090    2.072  160.4    9.4   131   28.4 
2026-05-24 00:00 UT   14 53 21.1   -07 56 33     1.096    2.074  159.2   10.0   129   28.5 
2026-05-25 00:00 UT   14 52 03.2   -07 49 17     1.102    2.076  157.9   10.6   128   28.5 
2026-05-26 00:00 UT   14 50 47.3   -07 42 16     1.109    2.078  156.7   11.1   127   28.6 
2026-05-27 00:00 UT   14 49 33.2   -07 35 31     1.116    2.080  155.5   11.6   126   28.6 
2026-05-28 00:00 UT   14 48 21.2   -07 29 01     1.123    2.083  154.3   12.2   125   28.6 
2026-05-29 00:00 UT   14 47 11.3   -07 22 48     1.130    2.085  153.1   12.7   124   28.7 
2026-05-30 00:00 UT   14 46 03.4   -07 16 49     1.137    2.087  151.9   13.2   123   28.7 
2026-05-31 00:00 UT   14 44 57.6   -07 11 07     1.145    2.089  150.7   13.7   123   28.7 
2026-06-01 00:00 UT   14 43 54.0   -07 05 41     1.152    2.091  149.5   14.2   122   28.8 
2026-06-02 00:00 UT   14 42 52.6   -07 00 31     1.160    2.092  148.4   14.7   122   28.8 
2026-06-03 00:00 UT   14 41 53.4   -06 55 37     1.169    2.094  147.2   15.2   121   28.8 
2026-06-04 00:00 UT   14 40 56.4   -06 50 59     1.177    2.096  146.0   15.7   120   28.9 
2026-06-05 00:00 UT   14 40 01.7   -06 46 37     1.186    2.098  144.9   16.2   120   28.9 
2026-06-06 00:00 UT   14 39 09.3   -06 42 31     1.194    2.100  143.7   16.6   120   28.9 
2026-06-07 00:00 UT   14 38 19.1   -06 38 41     1.203    2.102  142.6   17.1   119   29.0 
2026-06-08 00:00 UT   14 37 31.2   -06 35 07     1.213    2.104  141.4   17.5   119   29.0 
2026-06-09 00:00 UT   14 36 45.7   -06 31 49     1.222    2.105  140.3   17.9   118   29.0 
2026-06-10 00:00 UT   14 36 02.4   -06 28 46     1.231    2.107  139.2   18.3   118   29.1 
2026-06-11 00:00 UT   14 35 21.4   -06 25 59     1.241    2.109  138.1   18.8   118   29.1 
2026-06-12 00:00 UT   14 34 42.8   -06 23 28     1.251    2.110  137.0   19.2   117   29.1 
2026-06-13 00:00 UT   14 34 06.4   -06 21 12     1.261    2.112  135.9   19.5   117   29.2 

    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.