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(2018 WU)
Classification: Aten [NEO]          SPK-ID: 3836286
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 5 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .4592381828361245 0.00021339  
a .6909804730406838 9.2369e-05 au
q .3736558562262344 0.0001974 au
i 14.80537607957232 0.012277 deg
node 237.4901409191246 0.00057061 deg
peri .4377071372442581 0.00096839 deg
M 37.5957534411674 0.25775 deg
tp 2459178.590453889287
(2020-Nov-25.09045389)
0.14582 TDB
period 209.7959444329135
0.57
0.042068
0.0001152
d
yr
n 1.715953094198717 0.00034408 deg/d
Q 1.008305089855133 0.00013479 au
  Orbit Determination Parameters
   # obs. used (total)      103  
   data-arc span      10 days  
   first obs. used      2018-11-18  
   last obs. used      2018-11-28  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      7  
   norm. resid. RMS      .52953  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-15 20:55:15  

Additional Information
 Earth MOID = .0198723 au 
 Jupiter MOID = 3.99592 au 
 T_jup = 8.156 
[ hide covariance matrix ]
Orbital Elements at Epoch 2458442.5 (2018-Nov-20.0) TDB
Reference: JPL 5 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .4597229189780792 0.0002128  
q .3731997634026549 0.00019674 au
tp 2458339.500722854085
(2018-Aug-09.00072285)
0.022424 TDB
node 237.5082086130147 0.00063182 deg
peri .450529727599105 0.00094757 deg
i 14.8199519004325 0.012268 deg
  Orbit Determination Parameters
   # obs. used (total)      103  
   data-arc span      10 days  
   first obs. used      2018-11-18  
   last obs. used      2018-11-28  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      7  
   norm. resid. RMS      .52953  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-15 20:55:15  

Additional Information
 Jupiter MOID = 3.99592 au 
 T_jup = 8.156 
Orbit Covariance (6×6)
  e q tp node peri i
e 4.528327284169498E-8 -4.186680509845965E-8 4.771781431294721E-6 -1.344450983606971E-7 2.010127962946726E-7 2.610543392380121E-6
q -4.186680509845965E-8 3.87080990726367E-8 -4.411768662449989E-6 1.243017135446536E-7 -1.858481783567165E-7 -2.413585372879249E-6
tp 4.771781431294721E-6 -4.411768662449989E-6 .0005028436837728003 -1.416749070224507E-5 2.118986495374316E-5 .0002750855233857281
node -1.344450983606971E-7 1.243017135446536E-7 -1.416749070224507E-5 3.991918765780011E-7 -5.969430704534552E-7 -7.750755349643289E-6
peri 2.010127962946726E-7 -1.858481783567165E-7 2.118986495374316E-5 -5.969430704534552E-7 8.978822902767075E-7 1.158595540328021E-5
i 2.610543392380121E-6 -2.413585372879249E-6 .0002750855233857281 -7.750755349643289E-6 1.158595540328021E-5 .000150499843218033

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 24.7   .56024 E2018W69 autocmod 2.6q

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