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(2009 WD54)
Classification: Aten [NEO]          SPK-ID: 3478654
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 2455160.5 (2009-Nov-25.0) TDB
Reference: JPL 7 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2956953806542232 0.0017801  
a .8179013228233393 0.00063193 au
q .5760516798334993 0.0019009 au
i 3.020986813602242 0.021254 deg
node 61.40976366124467 0.0002114 deg
peri 211.1009318484464 0.016687 deg
M 129.123510370893 0.17976 deg
tp 2455063.593565153367
(2009-Aug-20.09356515)
0.24694 TDB
period 270.177881971926
0.74
0.31312
0.0008573
d
yr
n 1.33245548219009 0.0015442 deg/d
Q 1.059750965813179 0.00081878 au
  Orbit Determination Parameters
   # obs. used (total)      19  
   data-arc span      2 days  
   first obs. used      2009-11-24  
   last obs. used      2009-11-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      8  
   norm. resid. RMS      .64525  
   source      ORB  
   producer      Otto Matic  
   solution date      2017-Apr-06 08:58:56  

Additional Information
 Earth MOID = .00272262 au 
 Jupiter MOID = 4.01429 au 
 T_jup = 7.118 
[ 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 28.5   n/a MPO166415  

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