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(2021 GT9)
Classification: Apollo [NEO]          SPK-ID: 54137143
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]

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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 2 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2226573294426542 0.00040865  
a 1.139465786289581 0.00033846 au
q .8857553773230684 0.00020257 au
i 2.240170999004232 0.0036517 deg
node 34.54521478970335 0.0024864 deg
peri 249.7198687557179 0.0074349 deg
M 5.818950980093854 0.0085599 deg
tp 2459389.318873799455
(2021-Jun-23.81887380)
0.01376 TDB
period 444.2734508401614
1.22
0.19794
0.0005419
d
yr
n .8103117557873588 0.00036103 deg/d
Q 1.393176195256093 0.00041382 au
  Orbit Determination Parameters
   # obs. used (total)      20  
   data-arc span      12 days  
   first obs. used      2021-04-08  
   last obs. used      2021-04-20  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      7  
   norm. resid. RMS      .64075  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-20 06:22:08  

Additional Information
 Earth MOID = 2.51803E-5 au 
 Jupiter MOID = 3.72361 au 
 T_jup = 5.478 
[ 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 26.57   .49937 E2021-HA0 autocmod 2.9c

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