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JPL Small-Body Database Browser
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(2011 EN40)
Classification: Apollo [NEO]          SPK-ID: 3559598
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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .7390758318915698 2.2928e-07  
a 1.287449091492438 8.6886e-08 au
q .3359265831796188 2.7328e-07 au
i 13.40449957475976 1.3884e-05 deg
node 148.5641078336201 7.4328e-05 deg
peri 164.6360846570406 9.2461e-05 deg
M 52.06026498063627 0.00012478 deg
tp 2458923.339079838881
(2020-Mar-14.83907984)
0.00017717 TDB
period 533.5726060621225
1.46
5.4014e-05
1.479e-07
d
yr
n .6746973062520494 6.83e-08 deg/d
Q 2.238971599805258 1.511e-07 au
  Orbit Determination Parameters
   # obs. used (total)      67  
   data-arc span      1768 days (4.84 yr)  
   first obs. used      2011-03-10  
   last obs. used      2016-01-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      1  
   norm. resid. RMS      .37021  
   source      ORB  
   producer      Otto Matic  
   solution date      2017-Apr-06 08:54:11  

Additional Information
 Earth MOID = .15002 au 
 Jupiter MOID = 3.09147 au 
 T_jup = 4.693 
[ 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 20.6   n/a MPO294862  

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