(225088) Gonggong
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Today	13 Nov 2026	21.5	89.887 AU	89.628 AU	22h28m	-10°18'	104.8°	0.6°
Opposition	29 Aug 2027	21.3	90.053 AU	89.043 AU	22h31m	-09°53'	179.3°	0.0°

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 Gonggong are:

            e (Eccentricity)                : 0.5042562
            a (Semimajor axis)              : 66.8664995
            i (Inclination)                 : 30.89914
            Ω (Longitude of ascending node) : 336.83831
            ω (Argument of perihelion)      : 206.62338
            M (Mean anomaly)                : 111.66375
            Epoch                           : 2026 Jun 09

            L (Longitude of perihelion)     : 0.11224
            B (Latitude of perihelion)      : -13.30439
            P (Orbital period in years)     : 546.78            
        

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
2026-11-13 00:00 UT   22 28 35.7   -10 18 58    89.628   89.887  104.8    0.6    68   21.5 
2026-11-13 02:42 UT   22 28 35.6   -10 18 58    89.630   89.887  104.7    0.6    68   21.5 
2026-11-14 00:00 UT   22 28 35.2   -10 18 58    89.646   89.887  103.8    0.6    68   21.5 
2026-11-15 00:00 UT   22 28 34.8   -10 18 59    89.663   89.888  102.8    0.6    68   21.5 
2026-11-16 00:00 UT   22 28 34.4   -10 18 59    89.681   89.888  101.8    0.6    68   21.5 
2026-11-17 00:00 UT   22 28 34.0   -10 18 59    89.698   89.889  100.8    0.6    68   21.5 
2026-11-18 00:00 UT   22 28 33.7   -10 18 58    89.716   89.889   99.8    0.6    68   21.5 
2026-11-19 00:00 UT   22 28 33.5   -10 18 57    89.734   89.890   98.8    0.6    68   21.5 
2026-11-20 00:00 UT   22 28 33.3   -10 18 56    89.752   89.891   97.7    0.6    68   21.5 
2026-11-21 00:00 UT   22 28 33.1   -10 18 55    89.770   89.891   96.7    0.6    68   21.5 
2026-11-22 00:00 UT   22 28 33.0   -10 18 54    89.788   89.892   95.7    0.6    68   21.5 
2026-11-23 00:00 UT   22 28 32.9   -10 18 52    89.805   89.892   94.7    0.6    68   21.5 
2026-11-24 00:00 UT   22 28 32.8   -10 18 50    89.823   89.893   93.7    0.6    68   21.5 
2026-11-25 00:00 UT   22 28 32.8   -10 18 48    89.841   89.893   92.7    0.6    68   21.5 
2026-11-26 00:00 UT   22 28 32.9   -10 18 45    89.859   89.894   91.7    0.6    68   21.5 
2026-11-27 00:00 UT   22 28 33.0   -10 18 42    89.877   89.895   90.7    0.6    68   21.5 
2026-11-28 00:00 UT   22 28 33.1   -10 18 39    89.895   89.895   89.7    0.6    69   21.5 
2026-11-29 00:00 UT   22 28 33.3   -10 18 36    89.913   89.896   88.7    0.6    69   21.5 
2026-11-30 00:00 UT   22 28 33.5   -10 18 32    89.931   89.896   87.6    0.6    69   21.5 
2026-12-01 00:00 UT   22 28 33.8   -10 18 29    89.949   89.897   86.6    0.6    69   21.5 
2026-12-02 00:00 UT   22 28 34.1   -10 18 25    89.967   89.897   85.6    0.6    69   21.5 
2026-12-03 00:00 UT   22 28 34.4   -10 18 20    89.985   89.898   84.6    0.6    69   21.5 
2026-12-04 00:00 UT   22 28 34.8   -10 18 16    90.003   89.899   83.6    0.6    69   21.5 
2026-12-05 00:00 UT   22 28 35.3   -10 18 11    90.021   89.899   82.6    0.6    69   21.5 
2026-12-06 00:00 UT   22 28 35.8   -10 18 06    90.039   89.900   81.6    0.6    69   21.5 
2026-12-07 00:00 UT   22 28 36.3   -10 18 01    90.056   89.900   80.6    0.6    69   21.5 
2026-12-08 00:00 UT   22 28 36.9   -10 17 55    90.074   89.901   79.5    0.6    69   21.5 
2026-12-09 00:00 UT   22 28 37.5   -10 17 49    90.092   89.902   78.5    0.6    69   21.5 
2026-12-10 00:00 UT   22 28 38.1   -10 17 43    90.110   89.902   77.5    0.6    69   21.5 
2026-12-11 00:00 UT   22 28 38.8   -10 17 37    90.127   89.903   76.5    0.6    69   21.5 
2026-12-12 00:00 UT   22 28 39.6   -10 17 30    90.145   89.903   75.5    0.6    69   21.5 
2026-12-13 00:00 UT   22 28 40.4   -10 17 24    90.162   89.904   74.5    0.6    69   21.5 

    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.