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(2017 WJ16)
Classification: Aten [NEO]          SPK-ID: 3789720
[ 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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2120031906612777 1.3387e-08  
a .8241514106537214 2.2294e-09 au
q .6494286820071397 1.2103e-08 au
i 5.774207472062676 7.735e-06 deg
node 59.19252149081899 4.8137e-06 deg
peri 187.0534003624321 2.086e-05 deg
M 300.836054789546 3.2769e-05 deg
tp 2459045.412120632818
(2020-Jul-14.91212063)		 2.4812e-05 TDB
period 273.2806842123442
0.75		 1.1089e-06
3.036e-09		 d
yr
n 1.317326912575619 5.3452e-09 deg/d
Q .9988741393003032 2.702e-09 au
   Orbit Determination Parameters
   # obs. used (total)      151  
   # delay obs. used      2  
   # Doppler obs. used      0  
   data-arc span      1105 days (3.03 yr)  
   first obs. used      2017-11-25  
   last obs. used      2020-12-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .40478  
   source      ORB  
   producer      Giorgini  
   solution date      2020-Dec-07 19:04:31  

Additional Information
 Earth MOID = .00852175 au 
 Jupiter MOID = 4.004 au 
 T_jup = 7.088 
[ 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 24.3   n/a MPO435150  

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