(225088) Gonggong
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Today	11 Feb 2026	21.4	89.728 AU	90.687 AU	22h29m	-10°19'	13.4°	0.1°
Opposition	28 Aug 2026	21.4	89.843 AU	88.833 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)                : 0.5031767
            a (Semimajor axis)              : 66.8950294
            i (Inclination)                 : 30.86640
            Ω (Longitude of ascending node) : 336.84008
            ω (Argument of perihelion)      : 206.64413
            M (Mean anomaly)                : 111.38406
            Epoch                           : 2025 Nov 21

            L (Longitude of perihelion)     : 0.13993
            B (Latitude of perihelion)      : -13.30123
            P (Orbital period in years)     : 547.13            
        

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
2026-02-11 00:00 UT   22 29 44.7   -10 19 26    90.687   89.728   13.4    0.1    72   21.4 
2026-02-11 01:06 UT   22 29 44.8   -10 19 25    90.688   89.728   13.4    0.1    72   21.4 
2026-02-12 00:00 UT   22 29 47.2   -10 19 09    90.692   89.729   12.4    0.1    72   21.4 
2026-02-13 00:00 UT   22 29 49.8   -10 18 52    90.696   89.729   11.4    0.1    72   21.4 
2026-02-14 00:00 UT   22 29 52.3   -10 18 35    90.701   89.730   10.4    0.1    73   21.4 
2026-02-15 00:00 UT   22 29 54.9   -10 18 19    90.704   89.730    9.5    0.1    73   21.4 
2026-02-16 00:00 UT   22 29 57.5   -10 18 02    90.708   89.731    8.5    0.1    74   21.4 
2026-02-17 00:00 UT   22 30 00.1   -10 17 45    90.711   89.732    7.5    0.1    75   21.4 
2026-02-18 00:00 UT   22 30 02.7   -10 17 28    90.714   89.732    6.5    0.1    76   21.4 
2026-02-19 00:00 UT   22 30 05.3   -10 17 11    90.716   89.733    5.5    0.1    77   21.4 
2026-02-20 00:00 UT   22 30 07.9   -10 16 54    90.719   89.733    4.5    0.0    79   21.4 
2026-02-21 00:00 UT   22 30 10.5   -10 16 37    90.721   89.734    3.5    0.0    82   21.4 
2026-02-22 00:00 UT   22 30 13.1   -10 16 20    90.722   89.735    2.6    0.0    87   21.4 
2026-02-23 00:00 UT   22 30 15.8   -10 16 03    90.724   89.735    1.7    0.0    98   21.4 
2026-02-24 00:00 UT   22 30 18.4   -10 15 46    90.725   89.736    0.9    0.0   130   21.4 
2026-02-25 00:00 UT   22 30 21.0   -10 15 29    90.726   89.736    1.0    0.0   192   21.4 
2026-02-26 00:00 UT   22 30 23.6   -10 15 12    90.726   89.737    1.7    0.0   221   21.4 
2026-02-27 00:00 UT   22 30 26.2   -10 14 55    90.726   89.737    2.7    0.0   231   21.4 
2026-02-28 00:00 UT   22 30 28.8   -10 14 38    90.726   89.738    3.6    0.0   235   21.4 
2026-03-01 00:00 UT   22 30 31.4   -10 14 21    90.726   89.739    4.6    0.1   238   21.4 
2026-03-02 00:00 UT   22 30 34.0   -10 14 04    90.725   89.739    5.6    0.1   240   21.4 
2026-03-03 00:00 UT   22 30 36.7   -10 13 48    90.724   89.740    6.6    0.1   241   21.4 
2026-03-04 00:00 UT   22 30 39.2   -10 13 31    90.723   89.740    7.5    0.1   242   21.4 
2026-03-05 00:00 UT   22 30 41.8   -10 13 14    90.721   89.741    8.5    0.1   243   21.4 
2026-03-06 00:00 UT   22 30 44.4   -10 12 57    90.719   89.741    9.5    0.1   244   21.4 
2026-03-07 00:00 UT   22 30 47.0   -10 12 41    90.717   89.742   10.5    0.1   244   21.4 
2026-03-08 00:00 UT   22 30 49.6   -10 12 24    90.715   89.743   11.5    0.1   244   21.4 
2026-03-09 00:00 UT   22 30 52.1   -10 12 07    90.712   89.743   12.5    0.1   245   21.4 
2026-03-10 00:00 UT   22 30 54.7   -10 11 51    90.709   89.744   13.5    0.1   245   21.4 
2026-03-11 00:00 UT   22 30 57.2   -10 11 34    90.706   89.744   14.4    0.2   245   21.4 
2026-03-12 00:00 UT   22 30 59.8   -10 11 18    90.702   89.745   15.4    0.2   245   21.4 
2026-03-13 00:00 UT   22 31 02.3   -10 11 02    90.698   89.746   16.4    0.2   246   21.4 

    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.