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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 ]

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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.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1391321471914929 4.3117e-08  
a 3.125114137478784 2.7221e-08 au
q 2.690310297312871 1.453e-07 au
i 4.24604252538044 6.995e-06 deg
node 23.24307975539893 6.4005e-05 deg
peri 53.03866117967461 6.9621e-05 deg
M 329.0503100529916 2.5709e-05 deg
tp 2459373.980655340736
(2021-Jun-08.48065534)
0.00014427 TDB
period 2017.888903882276
5.52
2.6365e-05
7.218e-08
d
yr
n .1784042715668764 2.3309e-09 deg/d
Q 3.559917977644697 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.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .6008  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-14 03:17:10  

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 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1342317026063627 4.2474e-08  
q 2.708928995585212 1.4216e-07 au
tp 2457339.620180296204
(2015-Nov-13.12018030)
0.00015548 TDB
node 23.47431885214597 6.3546e-05 deg
peri 50.88570644429149 7.002e-05 deg
i 4.265195932429563 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.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .6008  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-14 03:17:10  

Additional Information
 Jupiter MOID = 1.72024 au 
 T_jup = 3.196 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.80400655980857E-15 -5.965287457335654E-15 -1.351133196101897E-12 6.586074734621515E-15 -2.09561538633828E-13 -1.323315227213053E-15
q -5.965287457335654E-15 2.020921559217494E-14 3.90339328754422E-12 -3.029215017038996E-14 6.035651398906308E-13 6.10378779865701E-15
tp -1.351133196101897E-12 3.90339328754422E-12 2.417530063829703E-8 -2.105864977679319E-11 4.596723311363535E-9 4.896710367519808E-12
node 6.586074734621515E-15 -3.029215017038996E-14 -2.105864977679319E-11 4.038077247482175E-9 -4.029954963582309E-9 -1.707304064947825E-10
peri -2.09561538633828E-13 6.035651398906308E-13 4.596723311363535E-9 -4.029954963582309E-9 4.902858059411538E-9 1.711541485770064E-10
i -1.323315227213053E-15 6.10378779865701E-15 4.896710367519808E-12 -1.707304064947825E-10 1.711541485770064E-10 4.923319043327821E-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 15.96   n/a MPCxxxxx  
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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