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266768 (2009 SK138)
Classification: Main-belt Asteroid          SPK-ID: 2266768
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1391321469276378 4.3117e-08  
a 3.125114139807668 2.7221e-08 au
q 2.690310300142309 1.453e-07 au
i 4.246042492532164 6.995e-06 deg
node 23.24307972873713 6.4005e-05 deg
peri 53.03866104149637 6.9621e-05 deg
M 329.0503101176425 2.5709e-05 deg
tp 2459373.980655172273
(2021-Jun-08.48065517)
0.00014427 TDB
period 2017.888906137919
5.52
2.6365e-05
7.218e-08
d
yr
n .1784042713674519 2.3309e-09 deg/d
Q 3.559917979473027 3.1008e-08 au
  Orbit Determination Parameters
   # obs. used (total)      292  
   data-arc span      9421 days (25.79 yr)  
   first obs. used      1995-03-27  
   last obs. used      2021-01-10  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .60075  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 14:15:01  

Additional Information
 Earth MOID = 1.70771 au 
 Jupiter MOID = 1.72024 au 
 T_jup = 3.196 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457473.5 (2016-Mar-26.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1342317026158042 4.2474e-08  
q 2.708928995550314 1.4216e-07 au
tp 2457339.620178598325
(2015-Nov-13.12017860)
0.00015548 TDB
node 23.47431900168624 6.3546e-05 deg
peri 50.88570607100559 7.002e-05 deg
i 4.265195924941876 7.0166e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      292  
   data-arc span      9421 days (25.79 yr)  
   first obs. used      1995-03-27  
   last obs. used      2021-01-10  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .60075  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 14:15:01  

Additional Information
 Jupiter MOID = 1.72024 au 
 T_jup = 3.196 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.804006400937133E-15 -5.965287324058656E-15 -1.351134027534431E-12 6.586071678849619E-15 -2.09561683329175E-13 -1.323315048756519E-15
q -5.965287324058656E-15 2.020921696094188E-14 3.903395079713379E-12 -3.029214419403916E-14 6.035654755989779E-13 6.103787804288882E-15
tp -1.351134027534431E-12 3.903395079713379E-12 2.417529959658905E-8 -2.105869247310651E-11 4.596723001158325E-9 4.896713204329056E-12
node 6.586071678849619E-15 -3.029214419403916E-14 -2.105869247310651E-11 4.038077254211086E-9 -4.029954976473665E-9 -1.707304125995011E-10
peri -2.09561683329175E-13 6.035654755989779E-13 4.596723001158325E-9 -4.029954976473665E-9 4.902857992832804E-9 1.711541549863814E-10
i -1.323315048756519E-15 6.103787804288882E-15 4.896713204329056E-12 -1.707304125995011E-10 1.711541549863814E-10 4.923319101528112E-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 15.8   n/a MPO440311  
diameter diameter 2.969 km 0.317 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.105   0.016 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

266768 (2009 SK138)          Discovered 2009-Sep-18 by Spacewatch at Kitt Peak
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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