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(2018 WD)
Classification: Apollo [NEO]          SPK-ID: 3836267
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 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .5177721488480835 1.6139e-05  
a 1.905973791421485 6.2901e-05 au
q .9191136457890539 5.3605e-07 au
i 16.75732399589741 0.00034562 deg
node 61.21505698931345 2.6098e-05 deg
peri 40.49184804222651 0.00010453 deg
M 343.952639961376 0.017004 deg
tp 2459439.342510255096
(2021-Aug-12.84251026)
0.047517 TDB
period 961.1115881186975
2.63
0.047578
0.0001303
d
yr
n .3745662880880175 1.8542e-05 deg/d
Q 2.892833937053917 9.547e-05 au
  Orbit Determination Parameters
   # obs. used (total)      72  
   # delay obs. used      0  
   # Doppler obs. used      2  
   data-arc span      9 days  
   first obs. used      2018-11-16  
   last obs. used      2018-11-25  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      5  
   norm. resid. RMS      .31035  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-15 20:55:11  

Additional Information
 Earth MOID = .0107079 au 
 Jupiter MOID = 2.4209 au 
 T_jup = 3.722 
[ 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 24.3   .29321 E2018W53 autocmod 2.6q

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