(225088) Gonggong
ephemeris date magn radius delta ra dec elong phase
Opposition28 Aug 202521.389.631 AU88.621 AU22h29m-10°24'179.1°0.0°
Today9 Oct 202521.489.655 AU88.895 AU22h28m-10°31'139.3°0.4°
(225088) Gonggong - 2025-10-09
astro.vanbuitenen.nl


 
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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)                : 0.5019951
            a (Semimajor axis)              : 66.9464643
            i (Inclination)                 : 30.82492
            Ω (Longitude of ascending node) : 336.84258
            ω (Argument of perihelion)      : 206.70820
            M (Mean anomaly)                : 111.02609
            Epoch                           : 2025 May 05

            L (Longitude of perihelion)     : 0.20952
            B (Latitude of perihelion)      : -13.31497
            P (Orbital period in years)     : 547.76            
        

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
2025-10-09 00:00 UT   22 28 28.8   -10 31 26    88.895   89.655  139.3    0.4    67   21.4 
2025-10-09 21:30 UT   22 28 27.2   -10 31 33    88.906   89.656  138.4    0.4    68   21.4 
2025-10-10 00:00 UT   22 28 27.0   -10 31 34    88.907   89.656  138.3    0.4    68   21.4 
2025-10-11 00:00 UT   22 28 25.3   -10 31 41    88.919   89.657  137.3    0.4    68   21.4 
2025-10-12 00:00 UT   22 28 23.6   -10 31 49    88.932   89.657  136.4    0.4    68   21.4 
2025-10-13 00:00 UT   22 28 21.9   -10 31 56    88.945   89.658  135.4    0.4    68   21.4 
2025-10-14 00:00 UT   22 28 20.3   -10 32 04    88.958   89.658  134.4    0.5    68   21.4 
2025-10-15 00:00 UT   22 28 18.7   -10 32 11    88.971   89.659  133.4    0.5    68   21.4 
2025-10-16 00:00 UT   22 28 17.1   -10 32 18    88.984   89.660  132.4    0.5    68   21.4 
2025-10-17 00:00 UT   22 28 15.6   -10 32 24    88.998   89.660  131.4    0.5    68   21.4 
2025-10-18 00:00 UT   22 28 14.1   -10 32 31    89.012   89.661  130.4    0.5    68   21.4 
2025-10-19 00:00 UT   22 28 12.6   -10 32 37    89.026   89.661  129.4    0.5    68   21.4 
2025-10-20 00:00 UT   22 28 11.2   -10 32 43    89.040   89.662  128.4    0.5    68   21.5 
2025-10-21 00:00 UT   22 28 09.8   -10 32 49    89.054   89.662  127.4    0.5    68   21.5 
2025-10-22 00:00 UT   22 28 08.4   -10 32 55    89.069   89.663  126.4    0.5    68   21.5 
2025-10-23 00:00 UT   22 28 07.1   -10 33 00    89.084   89.664  125.4    0.5    68   21.5 
2025-10-24 00:00 UT   22 28 05.8   -10 33 05    89.099   89.664  124.4    0.5    68   21.5 
2025-10-25 00:00 UT   22 28 04.6   -10 33 10    89.114   89.665  123.4    0.5    68   21.5 
2025-10-26 00:00 UT   22 28 03.3   -10 33 15    89.129   89.665  122.4    0.5    68   21.5 
2025-10-27 00:00 UT   22 28 02.2   -10 33 20    89.144   89.666  121.4    0.5    68   21.5 
2025-10-28 00:00 UT   22 28 01.0   -10 33 24    89.160   89.666  120.4    0.5    68   21.5 
2025-10-29 00:00 UT   22 27 59.9   -10 33 28    89.176   89.667  119.4    0.6    68   21.5 
2025-10-30 00:00 UT   22 27 58.8   -10 33 32    89.191   89.668  118.4    0.6    68   21.5 
2025-10-31 00:00 UT   22 27 57.8   -10 33 36    89.207   89.668  117.3    0.6    68   21.5 
2025-11-01 00:00 UT   22 27 56.8   -10 33 39    89.224   89.669  116.3    0.6    68   21.5 
2025-11-02 00:00 UT   22 27 55.9   -10 33 42    89.240   89.669  115.3    0.6    68   21.5 
2025-11-03 00:00 UT   22 27 55.0   -10 33 45    89.256   89.670  114.3    0.6    68   21.5 
2025-11-04 00:00 UT   22 27 54.1   -10 33 48    89.273   89.671  113.3    0.6    68   21.5 
2025-11-05 00:00 UT   22 27 53.3   -10 33 50    89.289   89.671  112.3    0.6    68   21.5 
2025-11-06 00:00 UT   22 27 52.5   -10 33 53    89.306   89.672  111.3    0.6    68   21.5 
2025-11-07 00:00 UT   22 27 51.7   -10 33 55    89.323   89.672  110.3    0.6    68   21.5 
2025-11-08 00:00 UT   22 27 51.0   -10 33 56    89.340   89.673  109.3    0.6    68   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.