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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .03095797850535691 7.1059e-08  
a 3.080225836525985 4.0257e-08 au
q 2.984868271287169 2.3393e-07 au
i 8.545117168820257 7.2669e-06 deg
node 291.2451464767789 5.1758e-05 deg
peri 283.7069767317812 0.00014599 deg
M 316.6312058140334 0.00013896 deg
tp 2459634.374074965408
(2022-Feb-23.87407497)
0.00076363 TDB
period 1974.568779116686
5.41
3.8709e-05
1.06e-07
d
yr
n .1823182883308042 3.5742e-09 deg/d
Q 3.175583401764801 4.1503e-08 au
  Orbit Determination Parameters
   # obs. used (total)      229  
   data-arc span      6768 days (18.53 yr)  
   first obs. used      2002-09-03  
   last obs. used      2021-03-15  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .49453  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-14 07:48:33  

Additional Information
 Earth MOID = 1.9911 au 
 Jupiter MOID = 1.9072 au 
 T_jup = 3.210 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457813.5 (2017-Mar-01.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .03221524285521058 7.1417e-08  
q 2.979583970064079 2.3555e-07 au
tp 2457656.998004685113
(2016-Sep-25.49800469)
0.00071917 TDB
node 291.2667711225419 5.1767e-05 deg
peri 283.0760321394417 0.00014049 deg
i 8.545492848476982 7.2668e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      229  
   data-arc span      6768 days (18.53 yr)  
   first obs. used      2002-09-03  
   last obs. used      2021-03-15  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .49453  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-14 07:48:33  

Additional Information
 Jupiter MOID = 1.9072 au 
 T_jup = 3.210 
Orbit Covariance (6×6)
  e q tp node peri i
e 5.100440106790814E-15 -1.661550789282398E-14 -2.982953930414192E-11 -3.542068032649396E-15 -5.316845849864274E-12 -2.637334075042048E-15
q -1.661550789282398E-14 5.548381633280867E-14 9.980644167108186E-11 1.512592439998322E-14 1.781543939847242E-11 1.161887268875114E-14
tp -2.982953930414192E-11 9.980644167108186E-11 5.171997116029909E-7 -7.825604310634068E-11 9.402749641112924E-8 1.614494001906074E-11
node -3.542068032649396E-15 1.512592439998322E-14 -7.825604310634068E-11 2.67983489562337E-9 -2.663560891153901E-9 1.980474959110147E-10
peri -5.316845849864274E-12 1.781543939847242E-11 9.402749641112924E-8 -2.663560891153901E-9 1.973752850475691E-8 -1.927998371962775E-10
i -2.637334075042048E-15 1.161887268875114E-14 1.614494001906074E-11 1.980474959110147E-10 -1.927998371962775E-10 5.280708914240254E-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 15.85   n/a MPCxxxxx  

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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