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332796 (2009 WD64)
Classification: Main-belt Asteroid          SPK-ID: 2332796
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1016729057362664 7.6432e-08  
a 2.723866363546798 3.55e-08 au
q 2.446922955527718 2.0773e-07 au
i 11.29090957655355 9.0172e-06 deg
node 61.32903812775088 4.4283e-05 deg
peri 241.6343995073079 6.8177e-05 deg
M 222.5359395528996 5.7573e-05 deg
tp 2459627.494583748333
(2022-Feb-16.99458375)		 0.00026728 TDB
period 1642.01500679708
4.50		 3.2101e-05
8.789e-08		 d
yr
n .2192428196513363 4.2861e-09 deg/d
Q 3.000809771565879 3.911e-08 au
   Orbit Determination Parameters
   # obs. used (total)      102  
   data-arc span      9393 days (25.72 yr)  
   first obs. used      1994-05-14  
   last obs. used      2020-01-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .73469  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-25 21:11:22  

Additional Information
 Earth MOID = 1.45461 au 
 Jupiter MOID = 2.19323 au 
 T_jup = 3.322 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457271.5 (2015-Sep-06.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1016416119829036 7.6755e-08  
q 2.448643975074094 2.0886e-07 au
tp 2457980.774848494579
(2017-Aug-15.27484849)		 0.0002552 TDB
node 61.44181260667246 4.4324e-05 deg
peri 240.563393018694 6.7975e-05 deg
i 11.28392808560546 9.0103e-06 deg
   Orbit Determination Parameters
   # obs. used (total)      102  
   data-arc span      9393 days (25.72 yr)  
   first obs. used      1994-05-14  
   last obs. used      2020-01-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .73469  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-25 21:11:22  

Additional Information
 Jupiter MOID = 2.19323 au 
 T_jup = 3.322 
Orbit Covariance (6×6)
  e q tp node peri i
e 5.891403621554508E-15 -1.584175292747611E-14 -1.416568953712002E-12 -4.251752807314461E-15 -1.906385120437503E-13 1.581654866912786E-14
q -1.584175292747611E-14 4.362064224807376E-14 6.502655959716978E-12 1.798418313694322E-14 9.662598058824974E-13 -4.099349655924866E-14
tp -1.416568953712002E-12 6.502655959716978E-12 6.512648542874678E-8 4.228107508965132E-11 1.321691443319036E-8 5.666477354545502E-11
node -4.251752807314461E-15 1.798418313694322E-14 4.228107508965132E-11 1.964644994741271E-9 -1.917678372447154E-9 -3.705002378100069E-11
peri -1.906385120437503E-13 9.662598058824974E-13 1.321691443319036E-8 -1.917678372447154E-9 4.620662600113246E-9 4.828111424656866E-11
i 1.581654866912786E-14 -4.099349655924866E-14 5.666477354545502E-11 -3.705002378100069E-11 4.828111424656866E-11 8.118600436918302E-11

[ 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 16.9   n/a MPO455451  
diameter diameter 2.964 km 0.456 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.038   0.016 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

332796 (2009 WD64)          Discovered 2009-Nov-16 by Mt. Lemmon Survey at Mount Lemmon
Reference: 20120703/Numbers.arcLast Updated: 2012-07-09

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