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(2021 JC4)
Classification: Apollo [NEO]          SPK-ID: 54144917
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 5 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .4575062734489911 0.00055056  
a 1.245350626688658 0.00075816 au
q .6755949023349641 0.00027436 au
i 2.646630440629335 0.0034753 deg
node 220.9109813163539 0.0010017 deg
peri 105.7083982336485 0.0021889 deg
M 212.5707787322769 0.15505 deg
tp 2459408.382036702732
(2021-Jul-12.88203670)
0.028794 TDB
period 507.6166893473761
1.39
0.46355
0.001269
d
yr
n .709196540529112 0.00064763 deg/d
Q 1.815106351042351 0.001105 au
  Orbit Determination Parameters
   # obs. used (total)      40  
   data-arc span      5 days  
   first obs. used      2021-05-10  
   last obs. used      2021-05-15  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      7  
   norm. resid. RMS      .33559  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-31 06:00:25  

Additional Information
 Earth MOID = .00987932 au 
 Jupiter MOID = 3.54428 au 
 T_jup = 5.047 
[ 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 26.177   .43159 5 autocmod 2.9c

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