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(2018 LE4)
Classification: Apollo [NEO]          SPK-ID: 3825166
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 8 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2750160328570188 0.00021428  
a 1.251248621764503 0.00036233 au
q .907135189689017 5.7422e-06 au
i 20.99182963310046 0.010905 deg
node 256.3131419018852 0.0010816 deg
peri 295.0656927780138 0.017794 deg
M 187.1066968101905 0.25114 deg
tp 2459246.021492811239
(2021-Jan-31.52149281)
0.46328 TDB
period 511.2270734686015
1.40
0.22206
0.000608
d
yr
n .7041880578770061 0.00030587 deg/d
Q 1.595362053839989 0.00046198 au
  Orbit Determination Parameters
   # obs. used (total)      54  
   data-arc span      23 days  
   first obs. used      2018-06-11  
   last obs. used      2018-07-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      7  
   norm. resid. RMS      .35359  
   source      ORB  
   producer      Otto Matic  
   solution date      2018-Dec-29 06:53:49  

Additional Information
 Earth MOID = .0180544 au 
 Jupiter MOID = 3.48778 au 
 T_jup = 5.039 
[ hide covariance matrix ]
Orbital Elements at Epoch 2458290.5 (2018-Jun-21.0) TDB
Reference: JPL 8 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2750959085798553 0.00021357  
q .9070995148358055 5.5723e-06 au
tp 2458223.528221478615
(2018-Apr-15.02822148)
0.019643 TDB
node 256.320411982599 0.0010682 deg
peri 295.0641612974741 0.017708 deg
i 20.99370244227212 0.010905 deg
  Orbit Determination Parameters
   # obs. used (total)      54  
   data-arc span      23 days  
   first obs. used      2018-06-11  
   last obs. used      2018-07-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      7  
   norm. resid. RMS      .35359  
   source      ORB  
   producer      Otto Matic  
   solution date      2018-Dec-29 06:53:49  

Additional Information
 Jupiter MOID = 3.48778 au 
 T_jup = 5.039 
Orbit Covariance (6×6)
  e q tp node peri i
e 4.561308883060206E-8 -1.124421314333137E-9 4.194770217909695E-6 -2.280464586592298E-7 3.780538837271333E-6 2.329029548735054E-6
q -1.124421314333137E-9 3.105051218907173E-11 -1.028559226177097E-7 5.571064690607992E-9 -9.231986723225652E-8 -5.748824273893211E-8
tp 4.194770217909695E-6 -1.028559226177097E-7 .0003858598272458727 -2.098037912386777E-5 .0003478189610784334 .0002141747326265896
node -2.280464586592298E-7 5.571064690607992E-9 -2.098037912386777E-5 1.141011112938454E-6 -1.891441818135329E-5 -1.164295107196277E-5
peri 3.780538837271333E-6 -9.231986723225652E-8 .0003478189610784334 -1.891441818135329E-5 .0003135716335451303 .0001930164816248646
i 2.329029548735054E-6 -5.748824273893211E-8 .0002141747326265896 -1.164295107196277E-5 .0001930164816248646 .0001189238433445981

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 23.8   n/a E2018N16  

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