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(2011 WJ15)
Classification: Apollo [NEO]          SPK-ID: 3588784
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 2455889.5 (2011-Nov-24.0) TDB
Reference: JPL 6 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .7891173714325855 0.0013617  
a 2.309067276180305 0.012836 au
q .4869421767399028 0.00043726 au
i 14.89221032510687 0.028736 deg
node 58.89454158804904 0.00023171 deg
peri 260.2403955470429 0.0062653 deg
M 13.40991970426508 0.125 deg
tp 2455841.760597038535
(2011-Oct-07.26059704)
0.046925 TDB
period 1281.602384290285
3.51
10.687
0.02926
d
yr
n .2808983538208364 0.0023423 deg/d
Q 4.131192375620708 0.022965 au
  Orbit Determination Parameters
   # obs. used (total)      47  
   data-arc span      9 days  
   first obs. used      2011-11-22  
   last obs. used      2011-12-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      8  
   norm. resid. RMS      .59861  
   source      ORB  
   producer      Otto Matic  
   solution date      2017-Apr-06 08:51:56  

Additional Information
 Earth MOID = .00482182 au 
 Jupiter MOID = 1.65576 au 
 T_jup = 3.044 
[ 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 MPO213810  
rotation period rot_per 0.1667 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Incomplete or inconclusive result.
Published Reference List:
[Hergenrother, C.W.; Kwiatkowski, T.; Kyrszczynska, A.; Pretka-Ziomek, H.; et al. (2012) ACM 2012, #6484.]

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