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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 ]

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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 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 
[ show covariance matrix ]

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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