2021 GT
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Today	15 Oct 2025	29.8	1.603 AU	1.656 AU	08h59m	+17°55'	69.3°	35.6°

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 GT are:

            e (Eccentricity)                : 0.3918802
            a (Semimajor axis)              : 1.1741124
            i (Inclination)                 : 1.05765
            Ω (Longitude of ascending node) : 42.16136
            ω (Argument of perihelion)      : 248.65415
            M (Mean anomaly)                : 24.28250
            Epoch                           : 2025 May 05

            L (Longitude of perihelion)     : 110.81220
            B (Latitude of perihelion)      : -0.98509
            P (Orbital period in years)     : 1.27            
        

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. A more printer-friendly version of the same chart can be found below.

Ephemerides:

Date       Time       RA (2000)    DEC (2000)    delta   radius  elong  phase   PA    magn
2025-10-15 00:00 UT   08 59 48.0   +17 55 38     1.656    1.603   69.3   35.6   287   29.8 
2025-10-15 09:39 UT   09 00 33.9   +17 52 39     1.652    1.603   69.5   35.6   287   29.8 
2025-10-16 00:00 UT   09 01 42.0   +17 48 14     1.647    1.604   69.8   35.7   287   29.8 
2025-10-17 00:00 UT   09 03 35.3   +17 40 48     1.638    1.606   70.3   35.8   287   29.8 
2025-10-18 00:00 UT   09 05 27.8   +17 33 22     1.630    1.608   70.9   35.8   287   29.8 
2025-10-19 00:00 UT   09 07 19.6   +17 25 55     1.621    1.609   71.4   35.9   287   29.8 
2025-10-20 00:00 UT   09 09 10.6   +17 18 27     1.612    1.611   71.9   36.0   287   29.8 
2025-10-21 00:00 UT   09 11 00.9   +17 10 59     1.602    1.612   72.5   36.1   287   29.8 
2025-10-22 00:00 UT   09 12 50.4   +17 03 30     1.593    1.613   73.0   36.2   288   29.8 
2025-10-23 00:00 UT   09 14 39.1   +16 56 01     1.584    1.615   73.6   36.2   288   29.8 
2025-10-24 00:00 UT   09 16 27.1   +16 48 32     1.575    1.616   74.1   36.3   288   29.8 
2025-10-25 00:00 UT   09 18 14.2   +16 41 03     1.565    1.617   74.7   36.4   288   29.8 
2025-10-26 00:00 UT   09 20 00.6   +16 33 34     1.556    1.618   75.2   36.4   288   29.8 
2025-10-27 00:00 UT   09 21 46.2   +16 26 05     1.546    1.620   75.8   36.5   288   29.7 
2025-10-28 00:00 UT   09 23 31.0   +16 18 37     1.536    1.621   76.3   36.6   288   29.7 
2025-10-29 00:00 UT   09 25 14.9   +16 11 09     1.527    1.622   76.9   36.6   288   29.7 
2025-10-30 00:00 UT   09 26 58.1   +16 03 42     1.517    1.623   77.5   36.7   288   29.7 
2025-10-31 00:00 UT   09 28 40.4   +15 56 16     1.507    1.624   78.0   36.7   289   29.7 
2025-11-01 00:00 UT   09 30 22.0   +15 48 51     1.497    1.625   78.6   36.8   289   29.7 
2025-11-02 00:00 UT   09 32 02.7   +15 41 27     1.487    1.626   79.2   36.8   289   29.7 
2025-11-03 00:00 UT   09 33 42.5   +15 34 05     1.477    1.626   79.8   36.9   289   29.7 

    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.