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(2021 CG4)
Classification: Apollo [NEO]          SPK-ID: 54111266
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 .3646597246313004 0.00019993  
a 1.57179146668467 0.00050179 au
q .9986224232656103 4.5616e-06 au
i 13.74700061953046 0.0052522 deg
node 322.5289319490117 0.00015702 deg
peri 188.1763953871174 0.00088651 deg
M 328.1093644695767 0.015128 deg
tp 2459264.260467133183
(2021-Feb-18.76046713)
0.00029783 TDB
period 719.7651531920142
1.97
0.34467
0.0009437
d
yr
n .5001631412738893 0.00023951 deg/d
Q 2.144960510103729 0.00068477 au
  Orbit Determination Parameters
   # obs. used (total)      55  
   data-arc span      12 days  
   first obs. used      2021-02-08  
   last obs. used      2021-02-20  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      7  
   norm. resid. RMS      .40102  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-28 05:51:52  

Additional Information
 Earth MOID = .0138563 au 
 Jupiter MOID = 2.86861 au 
 T_jup = 4.305 
[ 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 25.89   .31868 E2021D74 autocmod 2.8

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