(225088) Gonggong
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Today	12 Apr 2026	21.5	89.762 AU	90.458 AU	22h32m	-10°03'	45.8°	0.5°
Opposition	28 Aug 2026	21.3	89.842 AU	88.832 AU	22h30m	-10°08'	178.9°	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)                : 0.5031714
            a (Semimajor axis)              : 66.8933048
            i (Inclination)                 : 30.86634
            Ω (Longitude of ascending node) : 336.84009
            ω (Argument of perihelion)      : 206.64135
            M (Mean anomaly)                : 111.39046
            Epoch                           : 2025 Nov 21

            L (Longitude of perihelion)     : 0.13743
            B (Latitude of perihelion)      : -13.29990
            P (Orbital period in years)     : 547.11            
        

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
2026-04-12 00:00 UT   22 32 09.7   -10 03 45    90.458   89.762   45.8    0.5   248   21.5 
2026-04-12 14:15 UT   22 32 10.8   -10 03 38    90.451   89.763   46.4    0.5   248   21.5 
2026-04-13 00:00 UT   22 32 11.6   -10 03 33    90.447   89.763   46.8    0.5   248   21.5 
2026-04-14 00:00 UT   22 32 13.4   -10 03 21    90.435   89.764   47.7    0.5   248   21.5 
2026-04-15 00:00 UT   22 32 15.2   -10 03 09    90.423   89.764   48.7    0.5   248   21.5 
2026-04-16 00:00 UT   22 32 17.0   -10 02 57    90.411   89.765   49.7    0.5   248   21.5 
2026-04-17 00:00 UT   22 32 18.7   -10 02 46    90.398   89.765   50.6    0.5   248   21.5 
2026-04-18 00:00 UT   22 32 20.4   -10 02 34    90.386   89.766   51.6    0.5   248   21.5 
2026-04-19 00:00 UT   22 32 22.1   -10 02 23    90.373   89.766   52.6    0.5   248   21.5 
2026-04-20 00:00 UT   22 32 23.8   -10 02 12    90.360   89.767   53.5    0.5   248   21.5 
2026-04-21 00:00 UT   22 32 25.4   -10 02 02    90.347   89.768   54.5    0.5   248   21.5 
2026-04-22 00:00 UT   22 32 27.0   -10 01 51    90.333   89.768   55.5    0.5   248   21.5 
2026-04-23 00:00 UT   22 32 28.5   -10 01 41    90.320   89.769   56.5    0.5   248   21.5 
2026-04-24 00:00 UT   22 32 30.0   -10 01 31    90.306   89.769   57.4    0.5   248   21.5 
2026-04-25 00:00 UT   22 32 31.5   -10 01 21    90.293   89.770   58.4    0.5   248   21.5 
2026-04-26 00:00 UT   22 32 32.9   -10 01 11    90.279   89.770   59.4    0.6   248   21.5 
2026-04-27 00:00 UT   22 32 34.3   -10 01 02    90.265   89.771   60.3    0.6   248   21.5 
2026-04-28 00:00 UT   22 32 35.7   -10 00 52    90.251   89.772   61.3    0.6   248   21.5 
2026-04-29 00:00 UT   22 32 37.0   -10 00 43    90.236   89.772   62.3    0.6   248   21.5 
2026-04-30 00:00 UT   22 32 38.3   -10 00 35    90.222   89.773   63.2    0.6   248   21.5 
2026-05-01 00:00 UT   22 32 39.6   -10 00 26    90.207   89.773   64.2    0.6   248   21.5 
2026-05-02 00:00 UT   22 32 40.8   -10 00 18    90.192   89.774   65.2    0.6   248   21.5 
2026-05-03 00:00 UT   22 32 42.0   -10 00 10    90.178   89.774   66.1    0.6   248   21.5 
2026-05-04 00:00 UT   22 32 43.2   -10 00 02    90.163   89.775   67.1    0.6   248   21.5 
2026-05-05 00:00 UT   22 32 44.3   -09 59 54    90.148   89.776   68.0    0.6   248   21.5 
2026-05-06 00:00 UT   22 32 45.3   -09 59 47    90.132   89.776   69.0    0.6   248   21.5 
2026-05-07 00:00 UT   22 32 46.4   -09 59 39    90.117   89.777   70.0    0.6   248   21.5 
2026-05-08 00:00 UT   22 32 47.4   -09 59 32    90.102   89.777   70.9    0.6   248   21.5 
2026-05-09 00:00 UT   22 32 48.3   -09 59 25    90.086   89.778   71.9    0.6   248   21.5 
2026-05-10 00:00 UT   22 32 49.2   -09 59 19    90.071   89.779   72.9    0.6   248   21.5 
2026-05-11 00:00 UT   22 32 50.1   -09 59 13    90.055   89.779   73.8    0.6   248   21.5 
2026-05-12 00:00 UT   22 32 50.9   -09 59 07    90.039   89.780   74.8    0.6   248   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.