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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1017771729870657 7.6423e-08  
a 2.723307291234555 3.5488e-08 au
q 2.446136773957639 2.0764e-07 au
i 11.29144590054661 9.0177e-06 deg
node 61.32298936302521 4.4284e-05 deg
peri 241.7473301552832 6.8142e-05 deg
M 266.2825266010822 5.7847e-05 deg
tp 2459627.828118778693
(2022-Feb-17.32811878)		 0.00026702 TDB
period 1641.509498506239
4.49		 3.2086e-05
8.785e-08		 d
yr
n .2193103362043273 4.2868e-09 deg/d
Q 3.000477808511472 3.91e-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.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .73502  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-14 07:48:31  

Additional Information
 Earth MOID = 1.452 au 
 Jupiter MOID = 2.19319 au 
 T_jup = 3.322 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457271.5 (2015-Sep-06.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1016416118658465 7.6755e-08  
q 2.448643975021251 2.0886e-07 au
tp 2457980.774848886188
(2017-Aug-15.27484889)		 0.0002552 TDB
node 61.44181265360828 4.4324e-05 deg
peri 240.5633930295378 6.7975e-05 deg
i 11.28392803381485 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.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .73502  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-14 07:48:31  

Additional Information
 Jupiter MOID = 2.19319 au 
 T_jup = 3.322 
Orbit Covariance (6×6)
  e q tp node peri i
e 5.891404360349933E-15 -1.584175643017278E-14 -1.416568238149196E-12 -4.251750545070125E-15 -1.906382543621883E-13 1.58165489110781E-14
q -1.584175643017278E-14 4.362065182240814E-14 6.502653348376267E-12 1.798417720470598E-14 9.662590048284713E-13 -4.099350717372004E-14
tp -1.416568238149196E-12 6.502653348376267E-12 6.512650125550445E-8 4.228109076682553E-11 1.321691778423025E-8 5.66647982727523E-11
node -4.251750545070125E-15 1.798417720470598E-14 4.228109076682553E-11 1.964645063335831E-9 -1.91767843646649E-9 -3.705003289635496E-11
peri -1.906382543621883E-13 9.662590048284713E-13 1.321691778423025E-8 -1.91767843646649E-9 4.620663364554716E-9 4.828112852287127E-11
i 1.58165489110781E-14 -4.099350717372004E-14 5.66647982727523E-11 -3.705003289635496E-11 4.828112852287127E-11 8.118600374681373E-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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