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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 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1112375728664891 7.0848e-08  
a 2.981516873908095 2.9444e-08 au
q 2.649860173394077 2.1499e-07 au
i 2.137103174099041 4.8354e-06 deg
node 144.0829972518925 0.00017882 deg
peri 228.9736880134861 0.00018037 deg
M 51.72165254786693 2.0901e-05 deg
tp 2458730.338022860968
(2019-Sep-03.83802286)
0.00010999 TDB
period 1880.417716352773
5.15
2.7855e-05
7.626e-08
d
yr
n .1914468242185306 2.8359e-09 deg/d
Q 3.313173574422114 3.2719e-08 au
  Orbit Determination Parameters
   # obs. used (total)      275  
   data-arc span      7181 days (19.66 yr)  
   first obs. used      2001-02-20  
   last obs. used      2020-10-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .573  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-11 22:22:50  

Additional Information
 Earth MOID = 1.65076 au 
 Jupiter MOID = 2.14999 au 
 T_jup = 3.249 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457333.5 (2015-Nov-07.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1110131577534523 7.1091e-08  
q 2.650269048555221 2.1491e-07 au
tp 2456835.471754775412
(2014-Jun-26.97175478)
0.00011965 TDB
node 144.1676096775848 0.00017847 deg
peri 226.5155700032018 0.00018004 deg
i 2.137301146098918 4.8435e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      275  
   data-arc span      7181 days (19.66 yr)  
   first obs. used      2001-02-20  
   last obs. used      2020-10-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .573  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-11 22:22:50  

Additional Information
 Jupiter MOID = 2.14999 au 
 T_jup = 3.249 
Orbit Covariance (6×6)
  e q tp node peri i
e 5.053996113487353E-15 -1.516893549923907E-14 1.173630125749566E-12 1.089550939773676E-14 4.785724259234986E-14 -3.629685980136379E-15
q -1.516893549923907E-14 4.618837091909996E-14 -4.7395330748465E-12 -3.067791253327667E-14 -3.562459322434078E-13 1.134161320587708E-14
tp 1.173630125749566E-12 -4.7395330748465E-12 1.43167508625787E-8 -8.764965075675408E-13 2.893258989136124E-9 -3.06623613648272E-12
node 1.089550939773676E-14 -3.067791253327667E-14 -8.764965075675408E-13 3.18528748703367E-8 -3.183119659487142E-8 3.498968923802778E-10
peri 4.785724259234986E-14 -3.562459322434078E-13 2.893258989136124E-9 -3.183119659487142E-8 3.241607595267237E-8 -3.501464501151156E-10
i -3.629685980136379E-15 1.134161320587708E-14 -3.06623613648272E-12 3.498968923802778E-10 -3.501464501151156E-10 2.345950016616791E-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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