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(2011 GW9)
Classification: Apollo [NEO]          SPK-ID: 3561772
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]

[ hide orbit diagram ]

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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3752719639997536 0.00023091  
a 1.315004911363231 0.0003033 au
q .8215204356066297 0.00011424 au
i 7.231276039962984 0.0043008 deg
node 15.44068135081122 0.001491 deg
peri 250.1870681199034 0.006906 deg
M 122.6404418200157 0.69369 deg
tp 2459012.862043385910
(2020-Jun-12.36204339)
0.99642 TDB
period 550.7943658602161
1.51
0.19056
0.0005217
d
yr
n .6536014569389458 0.00022613 deg/d
Q 1.808489387119833 0.00041712 au
  Orbit Determination Parameters
   # obs. used (total)      33  
   data-arc span      1 day  
   first obs. used      2011-04-04  
   last obs. used      2011-04-05  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      7  
   norm. resid. RMS      .63271  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-15 05:00:03  

Additional Information
 Earth MOID = .000396111 au 
 Jupiter MOID = 3.30066 au 
 T_jup = 4.881 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 28.1   n/a MPO201150  

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]
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