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(2018 XD)
Classification: Apollo [NEO]          SPK-ID: 3836712
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 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .5658454871349891 0.00034246  
a 1.834353591348148 0.0012996 au
q .7963928898739386 6.3997e-05 au
i 8.692051437598286 0.0037139 deg
node 242.5311260515784 0.0016713 deg
peri 121.6401761002616 0.0022548 deg
M 233.3877317855084 0.25149 deg
tp 2459319.651064034326
(2021-Apr-15.15106403)
0.9731 TDB
period 907.4506339126381
2.48
0.96436
0.00264
d
yr
n .3967157953791874 0.00042159 deg/d
Q 2.872314292822358 0.002035 au
  Orbit Determination Parameters
   # obs. used (total)      71  
   data-arc span      25 days  
   first obs. used      2018-12-03  
   last obs. used      2018-12-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      7  
   norm. resid. RMS      .41548  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jan-21 07:51:11  

Additional Information
 Earth MOID = .0090906 au 
 Jupiter MOID = 2.65614 au 
 T_jup = 3.804 
[ 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 23.1   .44674 E2018Y96 autocmod 2.6q

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