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(2018 XE)
Classification: Apollo [NEO]          SPK-ID: 3836711
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]

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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 8 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3907007974680428 0.00027154  
a 1.547588037290473 0.0006423 au
q .9429441569690818 2.8959e-05 au
i 5.246245199851449 0.0029769 deg
node 69.6452289182216 0.0012403 deg
peri 323.2250995998786 0.0010431 deg
M 36.8914137899576 0.25376 deg
tp 2459128.438338524093
(2020-Oct-05.93833852)
0.45082 TDB
period 703.2042273855191
1.93
0.43778
0.001199
d
yr
n .5119423148783724 0.00031871 deg/d
Q 2.152231917611863 0.00089324 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.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      7  
   norm. resid. RMS      .33941  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-15 20:55:46  

Additional Information
 Earth MOID = .00568203 au 
 Jupiter MOID = 3.28994 au 
 T_jup = 4.362 
[ show covariance matrix ]

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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