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JPL Small-Body Database Browser
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441849 (2009 WO20)
Classification: Main-belt Asteroid          SPK-ID: 2441849
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 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1230417092481946 5.8851e-08  
a 2.195283350122452 4.8312e-08 au
q 1.925171934439283 1.5143e-07 au
i 3.314514600720698 8.3666e-06 deg
node 301.210166648991 0.00012085 deg
peri 120.1926922737889 0.00014811 deg
M 331.2069671189956 9.8287e-05 deg
tp 2458695.520916423727
(2019-Jul-31.02091642)
0.00032726 TDB
period 1188.048860775253
3.25
3.9218e-05
1.074e-07
d
yr
n .3030178403311498 1.0003e-08 deg/d
Q 2.465394765805621 5.4256e-08 au
  Orbit Determination Parameters
   # obs. used (total)      78  
   data-arc span      4247 days (11.63 yr)  
   first obs. used      2006-12-27  
   last obs. used      2018-08-13  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .65481  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-14 12:47:17  

Additional Information
 Earth MOID = .940291 au 
 Jupiter MOID = 2.8049 au 
 T_jup = 3.657 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457189.5 (2015-Jun-16.0) TDB
Reference: JPL 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1224727819998164 5.914e-08  
q 1.926716205036968 1.5279e-07 au
tp 2457506.022018008856
(2016-Apr-27.52201801)
0.00029314 TDB
node 301.3182305499051 0.00012081 deg
peri 119.7275862795489 0.0001484 deg
i 3.314412633089889 8.3717e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      78  
   data-arc span      4247 days (11.63 yr)  
   first obs. used      2006-12-27  
   last obs. used      2018-08-13  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .65481  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-14 12:47:17  

Additional Information
 Jupiter MOID = 2.8049 au 
 T_jup = 3.657 
Orbit Covariance (6×6)
  e q tp node peri i
e 3.497506234100963E-15 -8.739703179371663E-15 -7.427366272545655E-12 -7.167263834753416E-14 -2.007008460753886E-12 -1.427503365237456E-14
q -8.739703179371663E-15 2.334561156216466E-14 2.766638932139053E-11 1.951343209097299E-13 7.699295078643331E-12 4.468035343689112E-14
tp -7.427366272545655E-12 2.766638932139053E-11 8.59315818809832E-8 2.586546653046295E-10 2.528394778778222E-8 9.777567532833515E-11
node -7.167263834753416E-14 1.951343209097299E-13 2.586546653046295E-10 1.459391567831201E-8 -1.44947017384526E-8 4.674073658511366E-10
peri -2.007008460753886E-12 7.699295078643331E-12 2.528394778778222E-8 -1.44947017384526E-8 2.202296510588264E-8 -4.378959538748841E-10
i -1.427503365237456E-14 4.468035343689112E-14 9.777567532833515E-11 4.674073658511366E-10 -4.378959538748841E-10 7.008519443762063E-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 18.0   n/a MPO437717  

441849 (2009 WO20)          Discovered 2006-Dec-27 by Mt. Lemmon Survey at Mount Lemmon
Reference: Last Updated: 2015-09-02

Alternate Designations
 2009 WO20 = 2012 TO43 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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