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225088 Gonggong (2007 OR10)
Classification: TransNeptunian Object          SPK-ID: 2225088
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .4985342479757793 3.2695e-05  
a 67.47381873380205 0.0031714 au
q 33.835809253292 0.0014801 au
i 30.60852353250115 0.00016516 deg
node 336.8593538069172 2.7908e-05 deg
peri 207.6241539405414 0.0058603 deg
M 107.0374022226439 0.015278 deg
tp 2399205.103217424818
(1856-Sep-12.60321742)
4.802 TDB
period 202442.3462431805
554.26
14.273
0.03908
d
yr
n .001778284072876511 1.2537e-07 deg/d
Q 101.1118282143121 0.0047525 au
  Orbit Determination Parameters
   # obs. used (total)      460  
   data-arc span      13118 days (35.92 yr)  
   first obs. used      1985-08-19  
   last obs. used      2021-07-19  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      3  
   norm. resid. RMS      .45734  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 19:44:46  

Additional Information
 Earth MOID = 32.8685 au 
 Jupiter MOID = 28.5747 au 
 T_jup = 5.450 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457541.5 (2016-Jun-02.0) TDB
Reference: JPL 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .5067400589084466 3.1804e-05  
q 33.03573349397833 0.0014387 au
tp 2399583.905878448866
(1857-Sep-26.40587845)
4.707 TDB
node 336.8159261375024 2.7649e-05 deg
peri 206.8984436530117 0.0057533 deg
i 30.93201151834297 0.00016671 deg
  Orbit Determination Parameters
   # obs. used (total)      460  
   data-arc span      13118 days (35.92 yr)  
   first obs. used      1985-08-19  
   last obs. used      2021-07-19  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      3  
   norm. resid. RMS      .45734  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 19:44:46  

Additional Information
 Jupiter MOID = 28.5747 au 
 T_jup = 5.450 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.011512338049324E-9 -3.150280625781896E-8 .0001487965147029149 4.552364446237664E-12 1.574324228927665E-7 -4.279929957810537E-11
q -3.150280625781896E-8 2.069795378123447E-6 -.004132591816109212 1.142250598425958E-9 -1.849147064900147E-6 -3.245402412920246E-9
tp .0001487965147029149 -.004132591816109212 22.15555760015888 1.22465322208996E-6 .02459856020201767 -8.287444696879535E-6
node 4.552364446237664E-12 1.142250598425958E-9 1.22465322208996E-6 7.644718254934451E-10 3.622918325962204E-9 -4.488787790547878E-9
peri 1.574324228927665E-7 -1.849147064900147E-6 .02459856020201767 3.622918325962204E-9 3.31003517247288E-5 -1.555223528749068E-8
i -4.279929957810537E-11 -3.245402412920246E-9 -8.287444696879535E-6 -4.488787790547878E-9 -1.555223528749068E-8 2.7793015060831E-8

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 1.92   n/a E2021B55  
rotation period rot_per 22.40 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Pal, A.; Csaba, K.; Muller, T.G.; Molnar, L.; et al. (2016) Astron. J. 151, A117.]

225088 Gonggong           Discovered 2007 July 17 by M. E. Schwamb, M. E. Brown and D. Rabinowitz at Palomar.
Gonggong is a Chinese water god with red hair and a serpent-like tail. He is known for creating chaos, causing flooding, and tilting the Earth; he is often depicted with the head of a human and the body of a snake. Gonggong is often attended by his minister, Xiangliu, a nine-headed poisonous snake monster for whom the satellite is named.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: MPC batch dated 2020-02-05Last Updated: 2020-02-24
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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