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(2018 XW2)
Classification: Aten [NEO]          SPK-ID: 3836859
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.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 3 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3019267659234026 0.00051166  
a .9980438013867041 0.00034413 au
q .6967076641841178 0.0002707 au
i 19.73547523037745 0.040601 deg
node 78.167628102539 0.0020713 deg
peri 249.9385352321796 0.027382 deg
M 247.5768946310975 0.37923 deg
tp 2459114.230226983190
(2020-Sep-21.73022698)
0.44246 TDB
period 364.1856500903373
1.00
0.18836
0.0005157
d
yr
n .9885068231290854 0.00051126 deg/d
Q 1.299379938589291 0.00044803 au
  Orbit Determination Parameters
   # obs. used (total)      42  
   data-arc span      4 days  
   first obs. used      2018-12-10  
   last obs. used      2018-12-14  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      7  
   norm. resid. RMS      .37767  
   source      ORB  
   producer      Otto Matic  
   solution date      2018-Dec-24 07:51:55  

Additional Information
 Earth MOID = .0196668 au 
 Jupiter MOID = 4.03323 au 
 T_jup = 6.000 
[ 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   .47383 E2018Y63 autocmod 2.6q

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