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324929 (2007 WE21)
Classification: Main-belt Asteroid          SPK-ID: 2324929
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0698486021009156 4.4538e-08  
a 2.461314343823072 2.0225e-08 au
q 2.289394977576098 1.1369e-07 au
i 5.719597515911851 5.1219e-06 deg
node 286.9351298323299 7.095e-05 deg
peri 186.418304550915 9.2586e-05 deg
M 353.5881252850003 6.1027e-05 deg
tp 2458625.620690795891
(2019-May-22.12069080)
0.00023921 TDB
period 1410.421926268266
3.86
1.7384e-05
4.759e-08
d
yr
n .2552427704754265 3.146e-09 deg/d
Q 2.633233710070046 2.1638e-08 au
  Orbit Determination Parameters
   # obs. used (total)      153  
   data-arc span      6932 days (18.98 yr)  
   first obs. used      2000-01-08  
   last obs. used      2018-12-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57475  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-14 13:30:53  

Additional Information
 Earth MOID = 1.3063 au 
 Jupiter MOID = 2.44138 au 
 T_jup = 3.479 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456965.5 (2014-Nov-04.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06944796772078855 4.4702e-08  
q 2.289912539707414 1.1385e-07 au
tp 2457218.407090069292
(2015-Jul-14.90709007)
0.000234 TDB
node 287.006759413292 7.0899e-05 deg
peri 187.1920606280656 9.266e-05 deg
i 5.722143544622433 5.1236e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      153  
   data-arc span      6932 days (18.98 yr)  
   first obs. used      2000-01-08  
   last obs. used      2018-12-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57475  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-14 13:30:53  

Additional Information
 Jupiter MOID = 2.44138 au 
 T_jup = 3.479 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.998256124654773E-15 -5.021261875551263E-15 3.094672752737226E-13 1.614673336593588E-15 6.97929756207767E-14 -3.123842523585584E-15
q -5.021261875551263E-15 1.296131979537023E-14 5.623687205929465E-13 6.707671533812973E-15 1.535088789092085E-13 8.061165415101746E-15
tp 3.094672752737226E-13 5.623687205929465E-13 5.475832258063293E-8 4.551843009849308E-10 1.403030441865016E-8 -1.535051505532301E-11
node 1.614673336593588E-15 6.707671533812973E-15 4.551843009849308E-10 5.026649407856364E-9 -4.881022009260697E-9 -6.32383804099691E-12
peri 6.97929756207767E-14 1.535088789092085E-13 1.403030441865016E-8 -4.881022009260697E-9 8.585811799087538E-9 2.210619545008232E-12
i -3.123842523585584E-15 8.061165415101746E-15 -1.535051505532301E-11 -6.32383804099691E-12 2.210619545008232E-12 2.625140455420911E-11

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 17.2   n/a MPO418668  

324929 (2007 WE21)          Discovered 2007-Nov-18 by Mt. Lemmon Survey at Mount Lemmon
Reference: 20120406/Numbers.arcLast Updated: 2012-04-09

Alternate Designations
 2007 WE21 = 2000 AW217 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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