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(2011 EP51)
Classification: Aten [NEO]          SPK-ID: 3559843
[ 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 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3077391589569469 1.3235e-07  
a .8287232021321792 7.3061e-09 au
q .5736926208999145 1.0901e-07 au
i 3.42607046639087 5.4088e-06 deg
node 159.5359129605881 2.6757e-05 deg
peri 170.1524830568112 4.9425e-05 deg
M 299.8309825662834 6.158e-05 deg
tp 2459046.555668745418
(2020-Jul-16.05566875)		 4.6986e-05 TDB
period 275.5577779978748
0.75		 3.644e-06
9.977e-09		 d
yr
n 1.30644107604459 1.7277e-08 deg/d
Q 1.083753783364444 9.5545e-09 au

Additional Model Parameters
 Parameter Value Uncertainty (1-sigma) 
A2 [EST] -3.265186681331246E-13 1.919E-14
ALN [SET] 1. n/a
NK [SET] 0. n/a
NM [SET] 2. n/a
R0 [SET] 1. n/a
   Orbit Determination Parameters
   # obs. used (total)      318  
   data-arc span      3240 days (8.87 yr)  
   first obs. used      2011-03-12  
   last obs. used      2020-01-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .39344  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jan-24 05:45:56  

Additional Information
 Earth MOID = .0260006 au 
 Jupiter MOID = 4.22006 au 
 T_jup = 7.037 
 Nongravitational accels. using nonstandard g(r) = (1 au/ r)^2 
[ 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 25.2   n/a MPO411533  

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