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442537 (2011 WE151)
Classification: Main-belt Asteroid          SPK-ID: 2442537
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .166653550725397 7.3073e-08  
a 3.115359818779426 7.1905e-08 au
q 2.596174043192605 2.2226e-07 au
i 11.74460119427808 1.2825e-05 deg
node 336.0382904382237 3.8346e-05 deg
peri 81.23419738334624 5.5292e-05 deg
M 263.8749092339964 3.7299e-05 deg
tp 2459736.784210219367
(2022-Jun-06.28421022)
0.0002136 TDB
period 2008.448721769654
5.50
6.9535e-05
1.904e-07
d
yr
n .1792428136690501 6.2056e-09 deg/d
Q 3.634545594366247 8.3889e-08 au
  Orbit Determination Parameters
   # obs. used (total)      85  
   data-arc span      4072 days (11.15 yr)  
   first obs. used      2007-01-27  
   last obs. used      2018-03-22  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .6048  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-14 14:44:34  

Additional Information
 Earth MOID = 1.63921 au 
 Jupiter MOID = 1.886 au 
 T_jup = 3.164 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457452.5 (2016-Mar-05.0) TDB
Reference: JPL 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1718264996818473 7.2908e-08  
q 2.572280544282755 2.2276e-07 au
tp 2457733.665617701977
(2016-Dec-11.16561770)
0.00019114 TDB
node 336.3522775565882 3.8533e-05 deg
peri 81.02002425673899 5.41e-05 deg
i 11.72936902790358 1.281e-05 deg
  Orbit Determination Parameters
   # obs. used (total)      85  
   data-arc span      4072 days (11.15 yr)  
   first obs. used      2007-01-27  
   last obs. used      2018-03-22  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .6048  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-14 14:44:34  

Additional Information
 Jupiter MOID = 1.886 au 
 T_jup = 3.164 
Orbit Covariance (6×6)
  e q tp node peri i
e 5.315567690041138E-15 -1.570594234937582E-14 -2.238515927415557E-12 3.155670500565558E-14 -6.430496473774234E-13 -3.025913870302564E-14
q -1.570594234937582E-14 4.962093996049486E-14 6.967114801480371E-12 -9.992253160004308E-14 1.86951268591757E-12 9.976729936335919E-14
tp -2.238515927415557E-12 6.967114801480371E-12 3.653267060383139E-8 3.003453426853486E-12 7.275782912620893E-9 2.252938244843139E-11
node 3.155670500565558E-14 -9.992253160004308E-14 3.003453426853486E-12 1.484805574711064E-9 -1.45349270455151E-9 -3.563810987445225E-11
peri -6.430496473774234E-13 1.86951268591757E-12 7.275782912620893E-9 -1.45349270455151E-9 2.926792336023558E-9 4.021651710035566E-11
i -3.025913870302564E-14 9.976729936335919E-14 2.252938244843139E-11 -3.563810987445225E-11 4.021651710035566E-11 1.640850803284736E-10

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 16.2   n/a MPO437721  

442537 (2011 WE151)          Discovered 2007-Jan-27 by Spacewatch at Kitt Peak
Reference: Last Updated: 2015-09-02

[ show close-approach data ]
Alternate Designations
 2011 WE151 = 2007 EC193 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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