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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1389865148107214 4.3132e-08  
a 3.124884780440688 2.7646e-08 au
q 2.690567935622171 1.4533e-07 au
i 4.246101897404354 7.1031e-06 deg
node 23.24321085634623 6.5988e-05 deg
peri 53.02412948137525 7.1489e-05 deg
M 293.3663568509797 2.6032e-05 deg
tp 2459373.956908720629
(2021-Jun-08.45690872)
0.00014631 TDB
period 2017.666763901132
5.52
2.6776e-05
7.331e-08
d
yr
n .1784239134236145 2.3678e-09 deg/d
Q 3.559201625259206 3.1488e-08 au
  Orbit Determination Parameters
   # obs. used (total)      280  
   data-arc span      9364 days (25.64 yr)  
   first obs. used      1995-03-27  
   last obs. used      2020-11-14  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .59638  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-18 00:21:01  

Additional Information
 Earth MOID = 1.70842 au 
 Jupiter MOID = 1.72073 au 
 T_jup = 3.196 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457389.5 (2016-Jan-02.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1342453951098394 4.2459e-08  
q 2.708893852688957 1.4222e-07 au
tp 2457339.550853912311
(2015-Nov-13.05085391)
0.00015681 TDB
node 23.4748123187565 6.5517e-05 deg
peri 50.86867525183983 7.1856e-05 deg
i 4.265204899988799 7.1257e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      280  
   data-arc span      9364 days (25.64 yr)  
   first obs. used      1995-03-27  
   last obs. used      2020-11-14  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .59638  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-18 00:21:01  

Additional Information
 Jupiter MOID = 1.72073 au 
 T_jup = 3.196 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.802806654404581E-15 -5.963883908639026E-15 -1.349159426565994E-12 4.044464992847246E-15 -2.067848164324826E-13 -1.120228717042292E-15
q -5.963883908639026E-15 2.022699033686844E-14 3.985351940476775E-12 -2.200151104101227E-14 6.091455420572467E-13 5.486576177037946E-15
tp -1.349159426565994E-12 3.985351940476775E-12 2.458894951604301E-8 -1.003501708696612E-11 4.654304772684869E-9 4.195648065493758E-12
node 4.044464992847246E-15 -2.200151104101227E-14 -1.003501708696612E-11 4.292466727915918E-9 -4.28164863847815E-9 -1.905213666620534E-10
peri -2.067848164324826E-13 6.091455420572467E-13 4.654304772684869E-9 -4.28164863847815E-9 5.163239046676747E-9 1.907614637947579E-10
i -1.120228717042292E-15 5.486576177037946E-15 4.195648065493758E-12 -1.905213666620534E-10 1.907614637947579E-10 5.077506436047928E-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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