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(2020 WB4)
Classification: Apollo [NEO]          SPK-ID: 54093098
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]

[ hide orbit diagram ]

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 4 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .4220990128902794 0.00096595  
a 1.3948546390407 0.0018082 au
q .8060878727761932 0.00030243 au
i 3.246070351705747 0.0068411 deg
node 68.07855152529849 0.0002747 deg
peri 70.99108862833324 0.0033246 deg
M 326.2191741367815 0.082551 deg
tp 2459234.962436572278
(2021-Jan-20.46243657)
0.028187 TDB
period 601.7164070625081
1.65
1.17
0.003203
d
yr
n .5982884890200478 0.0011634 deg/d
Q 1.983621405305206 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.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      8  
   norm. resid. RMS      .62139  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-15 23:18:46  

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 26.6   .4028 E2021-CC3 autocmod 2.8

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