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(2011 EP51)
Classification: Aten [NEO]          SPK-ID: 3559843
[ 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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3077081516295346 1.3246e-07  
a .8287334890844937 7.8644e-09 au
q .5737254389648091 1.0909e-07 au
i 3.426870669191873 5.4083e-06 deg
node 159.5180785272364 2.672e-05 deg
peri 170.1466342664594 4.937e-05 deg
M 201.128534557703 6.0802e-05 deg
tp 2459322.108564270623
(2021-Apr-17.60856427)		 4.625e-05 TDB
period 275.5629087674336
0.75		 3.9225e-06
1.074e-08		 d
yr
n 1.306416751115908 1.8596e-08 deg/d
Q 1.083741539204178 1.0284e-08 au

Additional Model Parameters
 Parameter Value Uncertainty (1-sigma) 
A2 [EST] -3.263990582903344E-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.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .39348  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-15 04:53:42  

Additional Information
 Earth MOID = .0258813 au 
 Jupiter MOID = 4.21939 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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