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JPL Small-Body Database Browser
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266896 (2009 WR101)
Classification: Main-belt Asteroid          SPK-ID: 2266896
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1112375611589418 7.3567e-08  
a 2.98151689141395 3.0708e-08 au
q 2.649860223858873 2.2508e-07 au
i 2.137107342459643 4.9782e-06 deg
node 144.0830380499982 0.00018581 deg
peri 228.9736151431702 0.00018739 deg
M 51.72167605920146 2.1298e-05 deg
tp 2458730.337897672905
(2019-Sep-03.83789767)
0.00011226 TDB
period 1880.417732913966
5.15
2.9051e-05
7.954e-08
d
yr
n .1914468225324223 2.9577e-09 deg/d
Q 3.313173558969027 3.4124e-08 au
  Orbit Determination Parameters
   # obs. used (total)      265  
   data-arc span      6851 days (18.76 yr)  
   first obs. used      2001-02-20  
   last obs. used      2019-11-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57236  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-04 19:34:56  

Additional Information
 Earth MOID = 1.65076 au 
 Jupiter MOID = 2.14999 au 
 T_jup = 3.249 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457228.5 (2015-Jul-25.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1110677426832416 7.3621e-08  
q 2.649448070010179 2.244e-07 au
tp 2456834.988686927551
(2014-Jun-26.48868693)
0.00012361 TDB
node 144.1694194448161 0.00018549 deg
peri 226.3849124093616 0.00018709 deg
i 2.137217139727032 4.9858e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      265  
   data-arc span      6851 days (18.76 yr)  
   first obs. used      2001-02-20  
   last obs. used      2019-11-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57236  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-04 19:34:56  

Additional Information
 Jupiter MOID = 2.14999 au 
 T_jup = 3.249 
Orbit Covariance (6×6)
  e q tp node peri i
e 5.419983253251919E-15 -1.640374908684105E-14 1.781795505258795E-12 3.351383873779499E-15 1.71673999850212E-13 -4.217698195069274E-15
q -1.640374908684105E-14 5.035355631290838E-14 -6.785797483911487E-12 -5.73553497083171E-15 -7.731260452747022E-13 1.330906942850851E-14
tp 1.781795505258795E-12 -6.785797483911487E-12 1.52800503684543E-8 -2.875733249688613E-12 3.079517138702455E-9 -3.819348966957439E-12
node 3.351383873779499E-15 -5.73553497083171E-15 -2.875733249688613E-12 3.440598616898356E-8 -3.438266599023485E-8 4.070780702782439E-10
peri 1.71673999850212E-13 -7.731260452747022E-13 3.079517138702455E-9 -3.438266599023485E-8 3.500117239381122E-8 -4.074269991982278E-10
i -4.217698195069274E-15 1.330906942850851E-14 -3.819348966957439E-12 4.070780702782439E-10 -4.074269991982278E-10 2.485771667137646E-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 16.2   n/a MPO503217  

266896 (2009 WR101)          Discovered 2001-Mar-20 by Sapcewatch at Kitt Peak
Reference: 20110218/Numbers.arcLast Updated: 2011-02-22

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Alternate Designations
 2009 WR101 = 2006 BF59 = 2006 HZ129 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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