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(2021 CH8)
Classification: Apollo [NEO]          SPK-ID: 54117606
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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 7 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2798810021116611 0.00046677  
a 1.17856837601794 0.00053476 au
q .8487094778809255 0.00016503 au
i 12.21120973690005 0.017958 deg
node 149.8882882161659 0.0022948 deg
peri 75.7664743143129 0.0049674 deg
M 263.2230458223993 0.083106 deg
tp 2459326.131935684019
(2021-Apr-21.63193568)
0.022379 TDB
period 467.3374692413567
1.28
0.31807
0.0008708
d
yr
n .7703212853538131 0.00052429 deg/d
Q 1.508427274154953 0.00068443 au
  Orbit Determination Parameters
   # obs. used (total)      49  
   data-arc span      12 days  
   first obs. used      2021-02-13  
   last obs. used      2021-02-25  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      7  
   norm. resid. RMS      .36933  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-15 23:25:28  

Additional Information
 Earth MOID = .0171692 au 
 Jupiter MOID = 3.50139 au 
 T_jup = 5.308 
[ 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 24.82   .37627 MPO606175 autocmod 2.8

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