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(2020 WS4)
Classification: Apollo [NEO]          SPK-ID: 54095169
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 2459178.5 (2020-Nov-25.0) TDB
Reference: JPL 2 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .5590310570616431 0.0015872  
a 1.87308762901367 0.0060606 au
q .8259734717970713 0.00030101 au
i .5658450104585618 0.0011199 deg
node 123.1308212445323 0.07535 deg
peri 1.29278326537406 0.074047 deg
M 343.4231376843643 0.092031 deg
tp 2459221.615695858714
(2021-Jan-07.11569586)
0.030127 TDB
period 936.3442980700048
2.56
4.5445
0.01244
d
yr
n .3844739597838454 0.001866 deg/d
Q 2.920201786230269 0.0094487 au
  Orbit Determination Parameters
   # obs. used (total)      30  
   data-arc span      2 days  
   first obs. used      2020-11-24  
   last obs. used      2020-11-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      8  
   norm. resid. RMS      .4895  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-26 05:21:19  

Additional Information
 Earth MOID = .00798941 au 
 Jupiter MOID = 2.17427 au 
 T_jup = 3.773 
[ 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 26.553   .33362 2 autocmod 2.8

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