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(2021 CO4)
Classification: Apollo [NEO]          SPK-ID: 54111271
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 2459255.5 (2021-Feb-10.0) TDB
Reference: JPL 4 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .7046314249148047 0.0022644  
a 2.340977617008703 0.015918 au
q .6914512230421966 0.00059907 au
i 2.657952010123768 0.0057329 deg
node 212.2598415460861 0.086253 deg
peri 12.17546722796401 0.080621 deg
M 345.6806520480837 0.16065 deg
tp 2459307.537336614652
(2021-Apr-03.03733661)
0.053057 TDB
period 1308.260770265569
3.58
13.344
0.03653
d
yr
n .2751744974565905 0.0028067 deg/d
Q 3.990504010975209 0.027135 au
  Orbit Determination Parameters
   # obs. used (total)      36  
   data-arc span      11 days  
   first obs. used      2021-02-07  
   last obs. used      2021-02-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      8  
   norm. resid. RMS      .39728  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-19 05:21:41  

Additional Information
 Earth MOID = .0404009 au 
 Jupiter MOID = .997114 au 
 T_jup = 3.174 
[ 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 23.89   .33347 E2021D54 autocmod 2.8

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