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(2018 LN4)
Classification: Apollo [NEO]          SPK-ID: 3825179
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 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2961986739440205 5.4319e-07  
a 1.305788685525128 3.8749e-09 au
q .9190158084214792 7.1069e-07 au
i 24.05628425235026 7.3031e-05 deg
node 262.2873292587536 4.5987e-06 deg
peri 66.42109502391753 0.00013922 deg
M 337.0698737319278 5.0084e-05 deg
tp 2459431.214564723108
(2021-Aug-04.71456472)
7.5734e-05 TDB
period 545.014151000124
1.49
2.426e-06
6.642e-09
d
yr
n .660533307877208 2.9402e-09 deg/d
Q 1.692561562628776 5.0227e-09 au
  Orbit Determination Parameters
   # obs. used (total)      90  
   data-arc span      1092 days (2.99 yr)  
   first obs. used      2018-06-12  
   last obs. used      2021-06-08  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .43617  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jun-07 22:42:02  

Additional Information
 Earth MOID = .0422392 au 
 Jupiter MOID = 3.6918 au 
 T_jup = 4.859 
[ hide covariance matrix ]
Orbital Elements at Epoch 2459084.5 (2020-Aug-23.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2961838766768282 5.4267e-07  
q .9192838334610933 7.1041e-07 au
tp 2458885.953091712475
(2020-Feb-06.45309171)
7.7711e-05 TDB
node 262.2928937779406 4.5919e-06 deg
peri 66.3704155687042 0.00013937 deg
i 24.05564989083319 7.3032e-05 deg
  Orbit Determination Parameters
   # obs. used (total)      90  
   data-arc span      1092 days (2.99 yr)  
   first obs. used      2018-06-12  
   last obs. used      2021-06-08  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .43617  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jun-07 22:42:02  

Additional Information
 Jupiter MOID = 3.6918 au 
 T_jup = 4.859 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.944912378280752E-13 -3.855165276597949E-13 4.120643953944235E-11 9.098802952530941E-13 7.507123787393169E-11 -2.397510796240855E-12
q -3.855165276597949E-13 5.046850722534422E-13 -5.397498631674083E-11 -1.196139691017574E-12 -9.830942227091923E-11 3.026938521660673E-12
tp 4.120643953944235E-11 -5.397498631674083E-11 6.039033188896665E-9 1.631436340950122E-10 1.07779336213503E-8 5.830489439042503E-10
node 9.098802952530941E-13 -1.196139691017574E-12 1.631436340950122E-10 2.108559590358029E-11 2.56324669446182E-10 1.711016627325358E-10
peri 7.507123787393169E-11 -9.830942227091923E-11 1.07779336213503E-8 2.56324669446182E-10 1.942492914911788E-8 2.752661654218243E-10
i -2.397510796240855E-12 3.026938521660673E-12 5.830489439042503E-10 1.711016627325358E-10 2.752661654218243E-10 5.333713488251018E-9

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 23.45   n/a E2021N14  

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