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(2020 WB4)
Classification: Apollo [NEO]          SPK-ID: 54093098
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 2459178.5 (2020-Nov-25.0) TDB
Reference: JPL 3 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .422099013815918 0.00096595  
a 1.394854641653756 0.0018082 au
q .8060878729951498 0.00030243 au
i 3.246070337682335 0.0068411 deg
node 68.07855211380023 0.0002747 deg
peri 70.99108800040491 0.0033246 deg
M 326.2191742810637 0.082551 deg
tp 2459234.962436489781
(2021-Jan-20.46243649)
0.028187 TDB
period 601.7164087533496
1.65
1.17
0.003203
d
yr
n .5982884873388389 0.0011634 deg/d
Q 1.983621410312362 0.0025715 au
  Orbit Determination Parameters
   # obs. used (total)      20  
   data-arc span      8 days  
   first obs. used      2020-11-24  
   last obs. used      2020-12-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      8  
   norm. resid. RMS      .62139  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-03 05:20:05  

Additional Information
 Earth MOID = .00361791 au 
 Jupiter MOID = 3.0529 au 
 T_jup = 4.668 
[ 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 26.574   .4028 3 autocmod 2.8

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