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(2017 WJ16)
Classification: Aten [NEO]          SPK-ID: 3789720
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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2142929569940917 1.2738e-08  
a .8225409163723024 2.6557e-09 au
q .6462761911542518 1.1833e-08 au
i 5.716408322284124 7.8268e-06 deg
node 58.99847270409899 5.0774e-06 deg
peri 186.5850853474947 2.0769e-05 deg
M 205.3286235637413 3.2603e-05 deg
tp 2459317.569063027447
(2021-Apr-13.06906303)
2.4364e-05 TDB
period 272.4800390410261
0.75
1.3196e-06
3.613e-09
d
yr
n 1.321197696781731 6.3984e-09 deg/d
Q .998805641590353 3.2247e-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.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .40477  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-15 20:07:55  

Additional Information
 Earth MOID = .00805127 au 
 Jupiter MOID = 4.00204 au 
 T_jup = 7.099 
[ 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 24.5   n/a E2020X02  

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