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101311 (1998 SA138)
Classification: Main-belt Asteroid          SPK-ID: 2101311
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1730338003099501 3.9822e-08  
a 2.366005687565464 9.5437e-09 au
q 1.956606731891056 9.1094e-08 au
i 5.680829976746633 4.7793e-06 deg
node 186.0605213645874 4.6281e-05 deg
peri 162.3323321240134 4.881e-05 deg
M 57.60181048669072 1.5721e-05 deg
tp 2458987.805756266143
(2020-May-18.30575627)
5.7628e-05 TDB
period 1329.297240785177
3.64
8.0429e-06
2.202e-08
d
yr
n .2708197903031518 1.6386e-09 deg/d
Q 2.775404643239873 1.1195e-08 au
  Orbit Determination Parameters
   # obs. used (total)      545  
   data-arc span      8158 days (22.34 yr)  
   first obs. used      1998-09-18  
   last obs. used      2021-01-18  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .53217  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 15:36:12  

Additional Information
 Earth MOID = .949513 au 
 Jupiter MOID = 2.65663 au 
 T_jup = 3.521 
[ hide covariance matrix ]
Orbital Elements at Epoch 2458053.5 (2017-Oct-27.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1739838632488198 3.9891e-08  
q 1.953980653594198 9.1367e-08 au
tp 2457659.239791055822
(2016-Sep-27.73979106)
5.5333e-05 TDB
node 186.1157277230789 4.6256e-05 deg
peri 162.4405846835147 4.8763e-05 deg
i 5.683052366066527 4.7832e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      545  
   data-arc span      8158 days (22.34 yr)  
   first obs. used      1998-09-18  
   last obs. used      2021-01-18  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .53217  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 15:36:12  

Additional Information
 Jupiter MOID = 2.65663 au 
 T_jup = 3.521 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.591275677352385E-15 -3.633626987744002E-15 1.023415291492732E-12 -2.38519685850471E-15 2.588157681702132E-13 -2.89130183388125E-15
q -3.633626987744002E-15 8.347919300854E-15 -2.347038870740772E-12 7.243759651124033E-15 -5.909794714237484E-13 6.854159390834458E-15
tp 1.023415291492732E-12 -2.347038870740772E-12 3.061740251120065E-9 2.011140990883758E-12 8.761344181818043E-10 -5.607713173222384E-12
node -2.38519685850471E-15 7.243759651124033E-15 2.011140990883758E-12 2.139578083850866E-9 -2.127728030969112E-9 1.164456486860548E-10
peri 2.588157681702132E-13 -5.909794714237484E-13 8.761344181818043E-10 -2.127728030969112E-9 2.377824775114796E-9 -1.174423404104798E-10
i -2.89130183388125E-15 6.854159390834458E-15 -5.607713173222384E-12 1.164456486860548E-10 -1.174423404104798E-10 2.287926898140569E-11

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 16.49   n/a MPCxxxxx  

101311 (1998 SA138)          Discovered 1998-Sep-26 by LINEAR at Socorro
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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