(225088) Gonggong
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Today	24 Aug 2026	21.3	89.840 AU	88.833 AU	22h30m	-10°07'	174.8°	0.1°
Opposition	28 Aug 2026	21.3	89.843 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)                : 0.5042567
            a (Semimajor axis)              : 66.8665321
            i (Inclination)                 : 30.89914
            Ω (Longitude of ascending node) : 336.83831
            ω (Argument of perihelion)      : 206.62345
            M (Mean anomaly)                : 111.66353
            Epoch                           : 2026 Jun 09

            L (Longitude of perihelion)     : 0.11231
            B (Latitude of perihelion)      : -13.30443
            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
2026-08-24 00:00 UT   22 30 57.4   -10 07 55    88.833   89.840  174.8    0.1   257   21.3 
2026-08-24 16:23 UT   22 30 55.8   -10 08 03    88.832   89.840  175.4    0.1   258   21.3 
2026-08-25 00:00 UT   22 30 55.1   -10 08 07    88.832   89.841  175.7    0.0   259   21.3 
2026-08-26 00:00 UT   22 30 52.7   -10 08 19    88.832   89.841  176.7    0.0   262   21.3 
2026-08-27 00:00 UT   22 30 50.3   -10 08 31    88.832   89.842  177.6    0.0   267   21.3 
2026-08-28 00:00 UT   22 30 48.0   -10 08 43    88.832   89.842  178.5    0.0   279   21.3 
2026-08-29 00:00 UT   22 30 45.6   -10 08 55    88.833   89.843  179.2    0.0   318   21.3 
2026-08-30 00:00 UT   22 30 43.3   -10 09 07    88.834   89.843  179.0    0.0    21   21.3 
2026-08-31 00:00 UT   22 30 40.9   -10 09 19    88.835   89.844  178.2    0.0    44   21.3 
2026-09-01 00:00 UT   22 30 38.5   -10 09 31    88.836   89.845  177.3    0.0    53   21.3 
2026-09-02 00:00 UT   22 30 36.2   -10 09 43    88.838   89.845  176.3    0.0    57   21.3 
2026-09-03 00:00 UT   22 30 33.8   -10 09 55    88.840   89.846  175.3    0.1    59   21.3 
2026-09-04 00:00 UT   22 30 31.5   -10 10 07    88.842   89.846  174.4    0.1    61   21.3 
2026-09-05 00:00 UT   22 30 29.1   -10 10 19    88.845   89.847  173.4    0.1    62   21.4 
2026-09-06 00:00 UT   22 30 26.8   -10 10 31    88.848   89.847  172.4    0.1    63   21.4 
2026-09-07 00:00 UT   22 30 24.5   -10 10 42    88.851   89.848  171.4    0.1    63   21.4 
2026-09-08 00:00 UT   22 30 22.1   -10 10 54    88.854   89.849  170.5    0.1    64   21.4 
2026-09-09 00:00 UT   22 30 19.8   -10 11 06    88.858   89.849  169.5    0.1    64   21.4 
2026-09-10 00:00 UT   22 30 17.5   -10 11 18    88.862   89.850  168.5    0.1    65   21.4 
2026-09-11 00:00 UT   22 30 15.2   -10 11 29    88.867   89.850  167.5    0.1    65   21.4 
2026-09-12 00:00 UT   22 30 12.9   -10 11 41    88.871   89.851  166.6    0.1    65   21.4 
2026-09-13 00:00 UT   22 30 10.6   -10 11 52    88.876   89.852  165.6    0.2    66   21.4 
2026-09-14 00:00 UT   22 30 08.3   -10 12 04    88.881   89.852  164.6    0.2    66   21.4 
2026-09-15 00:00 UT   22 30 06.0   -10 12 15    88.887   89.853  163.6    0.2    66   21.4 
2026-09-16 00:00 UT   22 30 03.8   -10 12 26    88.893   89.853  162.6    0.2    66   21.4 
2026-09-17 00:00 UT   22 30 01.5   -10 12 38    88.899   89.854  161.6    0.2    66   21.4 
2026-09-18 00:00 UT   22 29 59.3   -10 12 49    88.905   89.854  160.7    0.2    66   21.4 
2026-09-19 00:00 UT   22 29 57.1   -10 12 60    88.912   89.855  159.7    0.2    66   21.4 
2026-09-20 00:00 UT   22 29 54.9   -10 13 10    88.919   89.856  158.7    0.2    67   21.4 
2026-09-21 00:00 UT   22 29 52.7   -10 13 21    88.926   89.856  157.7    0.2    67   21.4 
2026-09-22 00:00 UT   22 29 50.5   -10 13 32    88.933   89.857  156.7    0.3    67   21.4 
2026-09-23 00:00 UT   22 29 48.4   -10 13 43    88.941   89.857  155.7    0.3    67   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.