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JPL Small-Body Database Browser
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(2019 WJ4)
Classification: Apollo [NEO]          SPK-ID: 3893641
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 .6818644481167276 0.00056529  
a 2.237962226092696 0.0035364 au
q .7119753478919166 0.00014003 au
i 10.68399135238701 0.0075858 deg
node 67.93860072566494 8.8627e-05 deg
peri 71.65617082107808 0.00075555 deg
M 41.09381231498492 0.093549 deg
tp 2458860.910906456022
(2020-Jan-12.41090646)
0.013096 TDB
period 1222.862295925449
3.35
2.8985
0.007936
d
yr
n .2943912828120651 0.00069779 deg/d
Q 3.763949104293476 0.0059478 au
  Orbit Determination Parameters
   # obs. used (total)      24  
   data-arc span      3 days  
   first obs. used      2019-11-26  
   last obs. used      2019-11-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      7  
   norm. resid. RMS      .63088  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 07:04:36  

Additional Information
 Earth MOID = 6.4916E-5 au 
 Jupiter MOID = 1.46578 au 
 T_jup = 3.268 
[ 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 28.4   .38217 E2019-XC0 autocmod 2.8

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