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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 ]

[ show orbit diagram ]
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 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457022.5 (2014-Dec-31.0) TDB
Reference: JPL 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07567004798791756 6.5742e-08  
q 2.932194599414902 2.3085e-07 au
tp 2457047.343615913519
(2015-Jan-24.84361591)
0.00025868 TDB
node 148.2779377344267 0.00016082 deg
peri 248.3742907066384 0.00016682 deg
i 2.151183779275742 6.7659e-06 deg
  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
 Jupiter MOID = 1.92135 au 
 T_jup = 3.197 
Orbit Covariance (6×6)
  e q tp node peri i
e 4.322040028446704E-15 -1.498899197751667E-14 -5.390853910350627E-12 1.131440868242353E-14 -8.509896635902038E-13 2.682613158754463E-16
q -1.498899197751667E-14 5.329318195831179E-14 2.049306285971334E-11 -3.424071585764801E-14 3.253592601971315E-12 -2.110886625950351E-17
tp -5.390853910350627E-12 2.049306285971334E-11 6.691354456639856E-8 -1.446106711260467E-12 1.15110533422669E-8 2.617115711677955E-12
node 1.131440868242353E-14 -3.424071585764801E-14 -1.446106711260467E-12 2.58629604656208E-8 -2.584444697242505E-8 1.20403668550078E-10
peri -8.509896635902038E-13 3.253592601971315E-12 1.15110533422669E-8 -2.584444697242505E-8 2.782810583225948E-8 -1.198590288132083E-10
i 2.682613158754463E-16 -2.110886625950351E-17 2.617115711677955E-12 1.20403668550078E-10 -1.198590288132083E-10 4.577675487811201E-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 15.9   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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