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266781 (2009 SR237)
Classification: Main-belt Asteroid          SPK-ID: 2266781
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 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1906836856111036 5.6236e-08  
a 3.166565125495024 4.1383e-08 au
q 2.562752816638046 1.8587e-07 au
i 17.53976768748852 6.6594e-06 deg
node 33.64753532901818 1.8901e-05 deg
peri 10.26253310855211 2.5795e-05 deg
M 296.3551305182751 1.7139e-05 deg
tp 2459364.366407487524
(2021-May-29.86640749)
0.00010042 TDB
period 2058.169146424628
5.63
4.0347e-05
1.105e-07
d
yr
n .174912737675316 3.4288e-09 deg/d
Q 3.770377434352001 4.9274e-08 au
  Orbit Determination Parameters
   # obs. used (total)      435  
   data-arc span      8061 days (22.07 yr)  
   first obs. used      1998-10-14  
   last obs. used      2020-11-08  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54649  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-18 05:54:22  

Additional Information
 Earth MOID = 1.57286 au 
 Jupiter MOID = 1.68116 au 
 T_jup = 3.104 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457516.5 (2016-May-08.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1948802881106228 5.8982e-08  
q 2.544145894812913 1.9724e-07 au
tp 2457293.766950003817
(2015-Sep-28.26695000)
8.4003e-05 TDB
node 33.96030364313851 1.8788e-05 deg
peri 8.100662711813216 2.5208e-05 deg
i 17.65586243901561 6.6846e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      435  
   data-arc span      8061 days (22.07 yr)  
   first obs. used      1998-10-14  
   last obs. used      2020-11-08  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54649  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-18 05:54:22  

Additional Information
 Jupiter MOID = 1.68116 au 
 T_jup = 3.104 
Orbit Covariance (6×6)
  e q tp node peri i
e 3.47888441216592E-15 -1.148325734999758E-14 -1.851164451279138E-12 -8.466512542600181E-15 -4.644388905696167E-13 1.031316669298033E-15
q -1.148325734999758E-14 3.890376445094688E-14 6.040613342297459E-12 2.359824576255063E-14 1.547370676958854E-12 9.326160940956225E-16
tp -1.851164451279138E-12 6.040613342297459E-12 7.056567241768554E-9 -1.40266445017586E-11 1.447483862029821E-9 -1.68747683418067E-13
node -8.466512542600181E-15 2.359824576255063E-14 -1.40266445017586E-11 3.529800697559795E-10 -3.375113647536409E-10 -4.076273525874695E-11
peri -4.644388905696167E-13 1.547370676958854E-12 1.447483862029821E-9 -3.375113647536409E-10 6.354359397734515E-10 3.862421071462805E-11
i 1.031316669298033E-15 9.326160940956225E-16 -1.68747683418067E-13 -4.076273525874695E-11 3.862421071462805E-11 4.468414462206963E-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 14.9   n/a MPO450146  

266781 (2009 SR237)          Discovered 2009-Sep-16 by CSS at Catalina
Reference: 20110218/Numbers.arcLast Updated: 2011-02-22

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Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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