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(2011 DW4)
Classification: Apollo [NEO]          SPK-ID: 3557878
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.


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 
[ 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 27.3   n/a MPO193828  

[ hide close-approach data ]
Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
2011-Mar-03 05:15 03:44 Earth 0.0175691810456363 0.0166844362192833 0.0184669576801782 4.59950288474856 4.56641149259733 2455623.718544435 223.899340426468 50529.6227345865 1875.93162101612 24.6222899414725 319.512580610788 T 5 CATAB v2.0e-lin.ifort 2017-Nov-28 23:44:04 2018-Dec-11 15:37
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]
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