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(2011 DW4)
Classification: Apollo [NEO]          SPK-ID: 3557878
[ 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 2455617.5 (2011-Feb-25.0) TDB
Reference: JPL 5 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3581255998465501 0.012145  
a 1.571340151148103 0.029139 au
q 1.00860301695522 0.00038322 au
i 1.195933833092979 0.013131 deg
node 156.5713584234298 0.0065592 deg
peri 6.113211345722572 0.9915 deg
M 356.6873234280684 0.3319 deg
tp 2455624.120339696343
(2011-Mar-03.62033970)		 0.84717 TDB
period 719.4551713491879
1.97		 20.012
0.05479		 d
yr
n .5003786397488744 0.013919 deg/d
Q 2.134077285340986 0.039574 au
   Orbit Determination Parameters
   # obs. used (total)      14  
   first obs. used      2011-02-25  
   last obs. used      2011-02-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      9  
   norm. resid. RMS      .37857  
   source      ORB  
   producer      Otto Matic  
   solution date      2017-Apr-06 08:54:22  

Additional Information
 Earth MOID = .0171127 au 
 Jupiter MOID = 2.84324 au 
 T_jup = 4.337 
[ hide covariance matrix ]
Orbit Covariance (6×6)
  e q tp node peri i
e .0001474963171776558 -4.615930815404454E-6 .01027755284417375 -7.930446396156516E-5 .01202888706112462 .0001588937420924139
q -4.615930815404454E-6 1.468580636069335E-7 -.0003235727241623171 2.460871311159596E-6 -.0003786695418502936 -4.923690779242293E-6
tp .01027755284417375 -.0003235727241623171 .7177012076648033 -.005509071640021125 .8399669145208682 .01103238940366293
node -7.930446396156516E-5 2.460871311159596E-6 -.005509071640021125 4.302292081362351E-5 -.006448396504739313 -8.608682496684038E-5
peri .01202888706112462 -.0003786695418502936 .8399669145208682 -.006448396504739313 .9830623995627759 .01291341263347431
i .0001588937420924139 -4.923690779242293E-6 .01103238940366293 -8.608682496684038E-5 .01291341263347431 .0001724321426214666

[ 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 27.3   n/a MPO193828  

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