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JPL Small-Body Database Browser
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(2018 WC)
Classification: Aten [NEO]          SPK-ID: 3836261
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]

[ hide orbit diagram ]

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 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3064883824154756 0.00014603  
a .7904550556545809 0.00014413 au
q .5481897642748736 0.00021538 au
i 40.83366933112323 0.059751 deg
node 237.4868791275276 0.00058363 deg
peri 9.694959656601549 0.020577 deg
M 61.06359302409106 0.3978 deg
tp 2459352.959435709104
(2021-May-18.45943571)
0.27174 TDB
period 256.6931025257318
0.70
0.070207
0.0001922
d
yr
n 1.402452954355922 0.00038358 deg/d
Q 1.032720347034288 0.0001883 au
  Orbit Determination Parameters
   # obs. used (total)      113  
   data-arc span      23 days  
   first obs. used      2018-11-16  
   last obs. used      2018-12-09  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      7  
   norm. resid. RMS      .48348  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-15 20:55:11  

Additional Information
 Earth MOID = .0378911 au 
 Jupiter MOID = 3.98428 au 
 T_jup = 7.144 
[ 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   .45636 E2018X68 autocmod 2.6q

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