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266902 (2009 WH146)
Classification: Main-belt Asteroid          SPK-ID: 2266902
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1376057674946528 6.8963e-08  
a 3.195529289833172 4.7326e-08 au
q 2.755806029354036 2.2825e-07 au
i 6.301931134442506 8.2832e-06 deg
node 122.9606223425131 6.1095e-05 deg
peri 257.1556803165976 6.9389e-05 deg
M 329.5383609694295 3.2548e-05 deg
tp 2459177.048242021880
(2020-Nov-23.54824202)
0.00019014 TDB
period 2086.472335388524
5.71
4.6351e-05
1.269e-07
d
yr
n .172540030315314 3.833e-09 deg/d
Q 3.635252550312308 5.3838e-08 au
  Orbit Determination Parameters
   # obs. used (total)      136  
   data-arc span      5337 days (14.61 yr)  
   first obs. used      2003-10-24  
   last obs. used      2018-06-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .62448  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-14 12:47:26  

Additional Information
 Earth MOID = 1.76698 au 
 Jupiter MOID = 1.86392 au 
 T_jup = 3.171 
[ show covariance matrix ]

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 15.9   n/a MPO450147  

266902 (2009 WH146)          Discovered 2009-Nov-19 by Mt. Lemmon Survey at Mount Lemmon
Reference: 20110218/Numbers.arcLast Updated: 2011-02-22

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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