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(2021 CH)
Classification: Apollo [NEO]          SPK-ID: 54109942
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 6 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .4187856566168798 0.00039807  
a 1.666138249296174 0.001113 au
q .9683834485501772 1.6372e-05 au
i 5.001957492664842 0.0037582 deg
node 318.5701659778384 0.00015008 deg
peri 212.0309362464548 0.0030051 deg
M 323.7666973857034 0.036863 deg
tp 2459279.562473824364
(2021-Mar-06.06247382)
0.0012327 TDB
period 785.5339845708793
2.15
0.78711
0.002155
d
yr
n .4582869832126492 0.00045921 deg/d
Q 2.363893050042171 0.0015791 au
  Orbit Determination Parameters
   # obs. used (total)      32  
   data-arc span      9 days  
   first obs. used      2021-02-01  
   last obs. used      2021-02-10  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      7  
   norm. resid. RMS      .33976  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-15 23:24:48  

Additional Information
 Earth MOID = .0132747 au 
 Jupiter MOID = 2.61578 au 
 T_jup = 4.147 
[ 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 27.4   .34347 MPO606140 autocmod 2.8

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