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332809 (2009 WR166)
Classification: Main-belt Asteroid          SPK-ID: 2332809
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | 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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .03126384255076333 7.7609e-08  
a 3.080456748661289 4.8518e-08 au
q 2.984149833886706 2.4415e-07 au
i 8.54590679118818 7.2929e-06 deg
node 291.24811078893 6.0638e-05 deg
peri 283.6525795996038 0.00014792 deg
M 244.523359649223 0.00013773 deg
tp 2459633.950581836943
(2022-Feb-23.45058184)
0.00076019 TDB
period 1974.79082149072
5.41
4.6655e-05
1.277e-07
d
yr
n .182297788749213 4.3068e-09 deg/d
Q 3.176763663435872 5.0035e-08 au
  Orbit Determination Parameters
   # obs. used (total)      168  
   data-arc span      6351 days (17.39 yr)  
   first obs. used      2002-09-03  
   last obs. used      2020-01-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54299  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-25 21:11:23  

Additional Information
 Earth MOID = 1.99003 au 
 Jupiter MOID = 1.9082 au 
 T_jup = 3.210 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457441.5 (2016-Feb-23.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .03340185033096081 7.738e-08  
q 2.979295663643289 2.4489e-07 au
tp 2457658.542201467096
(2016-Sep-27.04220147)
0.00070037 TDB
node 291.3559522904414 6.0612e-05 deg
peri 283.2973406339216 0.00014021 deg
i 8.546152833458075 7.2995e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      168  
   data-arc span      6351 days (17.39 yr)  
   first obs. used      2002-09-03  
   last obs. used      2020-01-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54299  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-25 21:11:23  

Additional Information
 Jupiter MOID = 1.9082 au 
 T_jup = 3.210 
Orbit Covariance (6×6)
  e q tp node peri i
e 5.987638789709755E-15 -1.859307229317479E-14 -2.707715133430294E-11 -2.248901934705765E-14 -4.854072233376463E-12 -1.646981053794863E-15
q -1.859307229317479E-14 5.997321535806049E-14 9.301339576346916E-11 8.387930360662969E-14 1.662869507770514E-11 7.325810931135469E-15
tp -2.707715133430294E-11 9.301339576346916E-11 4.905139780725816E-7 1.539187574574871E-10 8.869255537908822E-8 6.10609438965275E-12
node -2.248901934705765E-14 8.387930360662969E-14 1.539187574574871E-10 3.673801738569132E-9 -3.605139344102965E-9 1.986311905241733E-10
peri -4.854072233376463E-12 1.662869507770514E-11 8.869255537908822E-8 -3.605139344102965E-9 1.965753077634095E-8 -1.953622211752088E-10
i -1.646981053794863E-15 7.325810931135469E-15 6.10609438965275E-12 1.986311905241733E-10 -1.953622211752088E-10 5.328210369446966E-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 15.6   n/a MPO455451  

332809 (2009 WR166)          Discovered 2009-Nov-21 by Mt. Lemmon Survey at Mount Lemmon
Reference: 20120703/Numbers.arcLast Updated: 2012-07-09

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