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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 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 2 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .677225090579875 0.00060782  
a 2.194683058699649 0.0036894 au
q .708388625477662 0.00014314 au
i 10.73195375935853 0.0080781 deg
node 67.94521010907236 0.00011468 deg
peri 72.33799250731515 0.00085656 deg
M 280.9596932780164 0.20383 deg
tp 2458861.236757182238
(2020-Jan-12.73675718)
0.014918 TDB
period 1187.561593299063
3.25
2.9945
0.008198
d
yr
n .303142171346174 0.00076439 deg/d
Q 3.680977491921636 0.0061879 au
  Orbit Determination Parameters
   # obs. used (total)      21  
   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      .65607  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-01 04:52:32  

Additional Information
 Earth MOID = 8.28734E-5 au 
 Jupiter MOID = 1.53684 au 
 T_jup = 3.310 
[ 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 28.408   .39065 2 autocmod 2.8

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