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266903 (2009 WO156)
Classification: Main-belt Asteroid          SPK-ID: 2266903
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 .07613019342627737 6.4726e-08  
a 3.170888503110595 4.3718e-08 au
q 2.929488148035626 2.2679e-07 au
i 2.15102506099851 6.75e-06 deg
node 148.083751329594 0.00016116 deg
peri 253.291702732039 0.00016726 deg
M 335.4420327980197 4.8366e-05 deg
tp 2459141.188888366308
(2020-Oct-18.68888837)
0.00027835 TDB
period 2062.385676929589
5.65
4.2652e-05
1.168e-07
d
yr
n .1745551300259008 3.61e-09 deg/d
Q 3.412288858185564 4.7046e-08 au
  Orbit Determination Parameters
   # obs. used (total)      190  
   data-arc span      5792 days (15.86 yr)  
   first obs. used      2003-10-19  
   last obs. used      2019-08-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58966  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 04:37:02  

Additional Information
 Earth MOID = 1.93856 au 
 Jupiter MOID = 1.92135 au 
 T_jup = 3.197 
[ 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  

266903 (2009 WO156)          Discovered 2009-Nov-20 by Spacewatch at Kitt Peak
Reference: 20110218/Numbers.arcLast Updated: 2011-02-22

[ show close-approach data ]
Alternate Designations
 2009 WO156 = 2008 SJ87 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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