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(2018 XE)
Classification: Apollo [NEO]          SPK-ID: 3836711
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 7 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3908226039976931 0.00027668  
a 1.54798829115359 0.00065893 au
q .9429994762470049 2.6965e-05 au
i 5.246305222846961 0.0029672 deg
node 69.6592732532384 0.00031998 deg
peri 323.1941207123066 0.0022783 deg
M 294.5345764055904 0.18873 deg
tp 2459128.426175256577
(2020-Oct-05.92617526)
0.45048 TDB
period 703.4770503845066
1.93
0.44917
0.00123
d
yr
n .5117437730246227 0.00032675 deg/d
Q 2.152977106060176 0.00091645 au
  Orbit Determination Parameters
   # obs. used (total)      77  
   data-arc span      5 days  
   first obs. used      2018-12-03  
   last obs. used      2018-12-08  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      7  
   norm. resid. RMS      .33552  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-27 14:01:26  

Additional Information
 Earth MOID = .00602643 au 
 Jupiter MOID = 3.2881 au 
 T_jup = 4.361 
[ hide covariance matrix ]
Orbital Elements at Epoch 2458457.5 (2018-Dec-05.0) TDB
Reference: JPL 7 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3914615983833463 0.0002763  
q .9421782207974359 2.6954e-05 au
tp 2458425.096457128197
(2018-Nov-02.59645713)
0.0019502 TDB
node 69.67424358461113 0.00036379 deg
peri 323.1548854430726 0.0020893 deg
i 5.253831004286527 0.002958 deg
  Orbit Determination Parameters
   # obs. used (total)      77  
   data-arc span      5 days  
   first obs. used      2018-12-03  
   last obs. used      2018-12-08  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      7  
   norm. resid. RMS      .33552  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-27 14:01:26  

Additional Information
 Jupiter MOID = 3.2881 au 
 T_jup = 4.361 
Orbit Covariance (6×6)
  e q tp node peri i
e 7.634148611590026E-8 -7.427230046182712E-9 5.238209686498984E-7 -1.002748886040864E-7 -5.496012676776257E-7 8.171676806975464E-7
q -7.427230046182712E-9 7.265087527137695E-10 -5.005894871745326E-8 9.721671021716099E-9 5.473424926593179E-8 -7.955998798899456E-8
tp 5.238209686498984E-7 -5.005894871745326E-8 3.803198651518815E-6 -6.957117616810766E-7 -3.479078080196766E-6 5.593375715049128E-6
node -1.002748886040864E-7 9.721671021716099E-9 -6.957117616810766E-7 1.323429121979801E-7 7.108003109960124E-7 -1.072278868726879E-6
peri -5.496012676776257E-7 5.473424926593179E-8 -3.479078080196766E-6 7.108003109960124E-7 4.365273040609087E-6 -5.902616793188836E-6
i 8.171676806975464E-7 -7.955998798899456E-8 5.593375715049128E-6 -1.072278868726879E-6 -5.902616793188836E-6 8.74975476259447E-6

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 25.5   .5606 MPO477910 autocmod 2.6q

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