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(2017 KW4)
Classification: Apollo [NEO]          SPK-ID: 3774732
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.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 4 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .6157852221461797 0.00045014  
a 2.335757537794285 0.0025883 au
q .8974325635040173 5.6953e-05 au
i 6.189838807581963 0.0033908 deg
node 239.5426289818652 0.00049542 deg
peri 49.89729716271229 0.001397 deg
M 294.6570781079734 0.48836 deg
tp 2459237.166133317693
(2021-Jan-22.66613332)
2.1622 TDB
period 1303.887330523032
3.57
2.1673
0.005934
d
yr
n .2760974752746406 0.00045893 deg/d
Q 3.774082512084552 0.0041821 au
  Orbit Determination Parameters
   # obs. used (total)      113  
   data-arc span      3 days  
   first obs. used      2017-05-22  
   last obs. used      2017-05-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      7  
   norm. resid. RMS      .49613  
   source      ORB  
   producer      Otto Matic  
   solution date      2017-May-29 06:18:20  

Additional Information
 Earth MOID = .00789568 au 
 Jupiter MOID = 1.48696 au 
 T_jup = 3.277 
[ 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 25.5   n/a MPO410042  

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