(225088) Gonggong
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Today	19 Dec 2024	21.5	89.487 AU	89.861 AU	22h27m	-10°46'	67.3°	0.6°
Opposition	28 Aug 2025	21.4	89.635 AU	88.625 AU	22h29m	-10°23'	179.1°	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)                : 0.4976969
            a (Semimajor axis)              : 67.3689423
            i (Inclination)                 : 30.61495
            Ω (Longitude of ascending node) : 336.85877
            ω (Argument of perihelion)      : 207.40253
            M (Mean anomaly)                : 108.30335
            Epoch                           : 2022 Aug 09

            L (Longitude of perihelion)     : 0.90260
            B (Latitude of perihelion)      : -13.55532
            P (Orbital period in years)     : 552.95            
        

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
2024-12-19 00:00 UT   22 27 12.4   -10 46 30    89.861   89.487   67.3    0.6    69   21.5 
2024-12-19 00:29 UT   22 27 12.4   -10 46 29    89.861   89.487   67.3    0.6    69   21.5 
2024-12-20 00:00 UT   22 27 13.5   -10 46 21    89.877   89.487   66.3    0.6    69   21.5 
2024-12-21 00:00 UT   22 27 14.7   -10 46 12    89.894   89.488   65.3    0.6    69   21.5 
2024-12-22 00:00 UT   22 27 15.9   -10 46 02    89.910   89.488   64.3    0.6    69   21.5 
2024-12-23 00:00 UT   22 27 17.1   -10 45 53    89.926   89.489   63.3    0.6    69   21.5 
2024-12-24 00:00 UT   22 27 18.4   -10 45 43    89.942   89.490   62.3    0.6    69   21.5 
2024-12-25 00:00 UT   22 27 19.7   -10 45 33    89.958   89.490   61.3    0.6    69   21.5 
2024-12-26 00:00 UT   22 27 21.1   -10 45 23    89.974   89.491   60.3    0.5    69   21.5 
2024-12-27 00:00 UT   22 27 22.5   -10 45 12    89.990   89.491   59.2    0.5    69   21.5 
2024-12-28 00:00 UT   22 27 23.9   -10 45 01    90.005   89.492   58.2    0.5    69   21.5 
2024-12-29 00:00 UT   22 27 25.4   -10 44 51    90.021   89.492   57.2    0.5    69   21.5 
2024-12-30 00:00 UT   22 27 26.9   -10 44 39    90.036   89.493   56.2    0.5    69   21.5 
2024-12-31 00:00 UT   22 27 28.4   -10 44 28    90.051   89.494   55.2    0.5    69   21.5 
2025-01-01 00:00 UT   22 27 30.0   -10 44 17    90.066   89.494   54.2    0.5    69   21.5 
2025-01-02 00:00 UT   22 27 31.6   -10 44 05    90.081   89.495   53.2    0.5    69   21.5 
2025-01-03 00:00 UT   22 27 33.3   -10 43 53    90.095   89.495   52.2    0.5    69   21.5 
2025-01-04 00:00 UT   22 27 35.0   -10 43 41    90.109   89.496   51.1    0.5    69   21.5 
2025-01-05 00:00 UT   22 27 36.7   -10 43 29    90.123   89.497   50.1    0.5    69   21.5 
2025-01-06 00:00 UT   22 27 38.4   -10 43 16    90.137   89.497   49.1    0.5    69   21.5 
2025-01-07 00:00 UT   22 27 40.2   -10 43 04    90.151   89.498   48.1    0.5    69   21.5 
2025-01-08 00:00 UT   22 27 42.0   -10 42 51    90.165   89.498   47.1    0.5    69   21.5 
2025-01-09 00:00 UT   22 27 43.9   -10 42 38    90.178   89.499   46.1    0.5    69   21.5 
2025-01-10 00:00 UT   22 27 45.8   -10 42 25    90.191   89.500   45.1    0.4    70   21.5 
2025-01-11 00:00 UT   22 27 47.7   -10 42 11    90.204   89.500   44.1    0.4    70   21.5 
2025-01-12 00:00 UT   22 27 49.6   -10 41 58    90.216   89.501   43.1    0.4    70   21.5 
2025-01-13 00:00 UT   22 27 51.6   -10 41 44    90.229   89.501   42.1    0.4    70   21.5 
2025-01-14 00:00 UT   22 27 53.6   -10 41 30    90.241   89.502   41.0    0.4    70   21.5 
2025-01-15 00:00 UT   22 27 55.6   -10 41 16    90.253   89.503   40.0    0.4    70   21.5 
2025-01-16 00:00 UT   22 27 57.7   -10 41 02    90.265   89.503   39.0    0.4    70   21.5 
2025-01-17 00:00 UT   22 27 59.8   -10 40 48    90.276   89.504   38.0    0.4    70   21.5 
2025-01-18 00:00 UT   22 28 01.9   -10 40 34    90.288   89.504   37.0    0.4    70   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.