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(2018 XN5)
Classification: Apollo [NEO]          SPK-ID: 3836924
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 9 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .4499307678605093 2.8556e-05  
a 1.78880340453721 9.3432e-05 au
q .9839657151822898 3.1245e-07 au
i 3.491703737543028 0.0001602 deg
node 278.4569846815376 4.4901e-05 deg
peri 182.541702023645 1.6074e-05 deg
M 15.61015041529825 0.029303 deg
tp 2459358.608051960095
(2021-May-24.10805196)
0.06816 TDB
period 873.8609770856131
2.39
0.068465
0.0001874
d
yr
n .4119648427380577 3.2276e-05 deg/d
Q 2.59364109389213 0.00013547 au
  Orbit Determination Parameters
   # obs. used (total)      51  
   data-arc span      20 days  
   first obs. used      2018-12-15  
   last obs. used      2019-01-04  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      5  
   norm. resid. RMS      .49219  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-15 20:56:11  

Additional Information
 Earth MOID = .00127777 au 
 Jupiter MOID = 2.59073 au 
 T_jup = 3.954 
[ hide covariance matrix ]
Orbital Elements at Epoch 2458478.5 (2018-Dec-26.0) TDB
Reference: JPL 9 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .4542800397569963 2.8003e-05  
q .9839366540461515 4.3908e-08 au
tp 2458483.839399101770
(2018-Dec-31.33939910)
5.4257e-05 TDB
node 278.5222237871872 4.5037e-05 deg
peri 182.2714641360647 2.7098e-05 deg
i 3.478543444265632 0.00016261 deg
  Orbit Determination Parameters
   # obs. used (total)      51  
   data-arc span      20 days  
   first obs. used      2018-12-15  
   last obs. used      2019-01-04  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      5  
   norm. resid. RMS      .49219  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-15 20:56:11  

Additional Information
 Jupiter MOID = 2.59073 au 
 T_jup = 3.954 
Orbit Covariance (6×6)
  e q tp node peri i
e 7.841800151217534E-10 1.198712998473178E-12 -1.502180543791525E-9 1.225541579914934E-9 -6.677933800650394E-10 4.552799307203224E-9
q 1.198712998473178E-12 1.927886017358267E-15 -2.334343249675791E-12 1.890234903935801E-12 -1.085902059756987E-12 6.95944311474598E-12
tp -1.502180543791525E-9 -2.334343249675791E-12 2.943785268293521E-9 -2.329370281140874E-9 1.33703723579962E-9 -8.71384537382381E-9
node 1.225541579914934E-9 1.890234903935801E-12 -2.329370281140874E-9 2.028308883839758E-9 -1.138825827270053E-9 7.105814589360686E-9
peri -6.677933800650394E-10 -1.085902059756987E-12 1.33703723579962E-9 -1.138825827270053E-9 7.343011423919644E-10 -3.85971632409644E-9
i 4.552799307203224E-9 6.95944311474598E-12 -8.71384537382381E-9 7.105814589360686E-9 -3.85971632409644E-9 2.644254781771938E-8

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 25.6   .57085 E2019A52 autocmod 2.6q

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