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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 ]

[ 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 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 4 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .6812289940907322 0.00055716  
a 2.241916665500118 0.0035711 au
q .7146580306262241 0.00011074 au
i 10.62742560868364 0.0072487 deg
node 67.4860053063725 0.0014704 deg
peri 72.24795315719804 0.0025911 deg
M 157.1666815315218 0.37041 deg
tp 2458861.214341809709
(2020-Jan-12.71434181)
0.017414 TDB
period 1226.104891130222
3.36
2.9296
0.008021
d
yr
n .2936127264512847 0.00070154 deg/d
Q 3.769175300374013 0.0060039 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.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      7  
   norm. resid. RMS      .63088  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-15 22:09:22  

Additional Information
 Earth MOID = .00294048 au 
 Jupiter MOID = 1.45959 au 
 T_jup = 3.266 
[ 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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