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(2016 XK18)
Classification: Apollo [NEO]          SPK-ID: 3765708
[ 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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .6184079591165258 7.615e-07  
a 2.568240800143899 4.5132e-06 au
q .980020248407117 2.3379e-07 au
i 5.774195799996511 1.2848e-05 deg
node 270.2300808548636 1.6378e-05 deg
peri 184.4754979112907 3.6557e-05 deg
M 299.0300490134363 0.00081073 deg
tp 2459255.104094492137
(2021-Feb-09.60409449)		 0.0040566 TDB
period 1503.322087914562
4.12		 0.0039627
1.085e-05		 d
yr
n .2394696405341847 6.3124e-07 deg/d
Q 4.156461351880679 7.3043e-06 au
   Orbit Determination Parameters
   # obs. used (total)      87  
   # delay obs. used      4  
   # Doppler obs. used      2  
   data-arc span      14 days  
   first obs. used      2016-12-07  
   last obs. used      2016-12-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      3  
   norm. resid. RMS      .34931  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-11 10:15:43  

Additional Information
 Earth MOID = .0021879 au 
 Jupiter MOID = 1.07075 au 
 T_jup = 3.125 
[ 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 24.5   n/a MPO394942  

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