2021 TE4
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Today	17 May 2026	30.0	1.381 AU	1.378 AU	23h08m	-02°52'	68.6°	43.0°

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 TE4 are:

            e (Eccentricity)                : 0.2469073
            a (Semimajor axis)              : 1.1425130
            i (Inclination)                 : 2.58490
            Ω (Longitude of ascending node) : 191.44664
            ω (Argument of perihelion)      : 267.20919
            M (Mean anomaly)                : 77.09948
            Epoch                           : 2025 Nov 21

            L (Longitude of perihelion)     : 278.65299
            B (Latitude of perihelion)      : -2.58183
            P (Orbital period in years)     : 1.22            
        

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
2026-05-17 00:00 UT   23 08 57.4   -02 52 44     1.378    1.381   68.6   43.0   248   30.0 
2026-05-17 09:23 UT   23 09 58.6   -02 46 15     1.375    1.380   68.7   43.1   248   30.0 
2026-05-18 00:00 UT   23 11 34.1   -02 36 07     1.370    1.379   68.9   43.2   248   30.0 
2026-05-19 00:00 UT   23 14 11.1   -02 19 25     1.362    1.377   69.1   43.3   248   30.0 
2026-05-20 00:00 UT   23 16 48.4   -02 02 40     1.353    1.375   69.4   43.5   248   30.0 
2026-05-21 00:00 UT   23 19 25.9   -01 45 50     1.345    1.373   69.6   43.7   248   29.9 
2026-05-22 00:00 UT   23 22 03.9   -01 28 57     1.337    1.372   69.9   43.9   248   29.9 
2026-05-23 00:00 UT   23 24 42.2   -01 12 00     1.329    1.370   70.1   44.0   248   29.9 
2026-05-24 00:00 UT   23 27 20.9   +00 55 00     1.320    1.368   70.4   44.2   248   29.9 
2026-05-25 00:00 UT   23 29 60.0   +00 37 56     1.312    1.366   70.6   44.4   248   29.9 
2026-05-26 00:00 UT   23 32 39.5   +00 20 48     1.304    1.364   70.8   44.6   248   29.9 
2026-05-27 00:00 UT   23 35 19.5   +00 03 37     1.295    1.361   71.1   44.7   248   29.9 
2026-05-28 00:00 UT   23 37 59.9   +00 13 38     1.287    1.359   71.3   44.9   247   29.9 

    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.