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393842 (2005 SG128)
Classification: Main-belt Asteroid          SPK-ID: 2393842
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1962746043620268 9.8684e-08  
a 2.234365727786214 8.8023e-09 au
q 1.795816478564903 2.1929e-07 au
i 5.917593953467143 6.0701e-06 deg
node 224.5014276109241 5.1438e-05 deg
peri 141.2967539187506 5.2995e-05 deg
M 146.1385649559082 1.2921e-05 deg
tp 2458505.286863894850
(2019-Jan-21.78686389)
4.2145e-05 TDB
period 1219.91569474931
3.34
7.2088e-06
1.974e-08
d
yr
n .2951023595724614 1.7438e-09 deg/d
Q 2.672914977007526 1.053e-08 au
  Orbit Determination Parameters
   # obs. used (total)      236  
   data-arc span      8842 days (24.21 yr)  
   first obs. used      1995-11-17  
   last obs. used      2020-02-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55647  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-26 04:52:30  

Additional Information
 Earth MOID = .799298 au 
 Jupiter MOID = 2.80783 au 
 T_jup = 3.607 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457297.5 (2015-Oct-02.0) TDB
Reference: JPL 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1968064874753132 9.9187e-08  
q 1.794631224993711 2.2063e-07 au
tp 2457283.781918806254
(2015-Sep-18.28191881)
3.8283e-05 TDB
node 224.5460032084713 5.1512e-05 deg
peri 140.9333586745408 5.3033e-05 deg
i 5.912662931537394 6.0703e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      236  
   data-arc span      8842 days (24.21 yr)  
   first obs. used      1995-11-17  
   last obs. used      2020-02-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55647  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-26 04:52:30  

Additional Information
 Jupiter MOID = 2.80783 au 
 T_jup = 3.607 
Orbit Covariance (6×6)
  e q tp node peri i
e 9.838135549728099E-15 -2.187232128568107E-14 -5.005274591053641E-13 -1.989633555243825E-13 -3.581560533636991E-13 5.441384150975569E-15
q -2.187232128568107E-14 4.867559578961562E-14 1.232708776940139E-12 4.433891313979663E-13 8.302313589771495E-13 -1.228923601433748E-14
tp -5.005274591053641E-13 1.232708776940139E-12 1.465585229749952E-9 1.406950334814892E-11 5.054660089363458E-10 -2.911020404329512E-12
node -1.989633555243825E-13 4.433891313979663E-13 1.406950334814892E-11 2.65353645906558E-9 -2.626301586307413E-9 -1.416943773546475E-10
peri -3.581560533636991E-13 8.302313589771495E-13 5.054660089363458E-10 -2.626301586307413E-9 2.812511026822935E-9 1.398439650904028E-10
i 5.441384150975569E-15 -1.228923601433748E-14 -2.911020404329512E-12 -1.416943773546475E-10 1.398439650904028E-10 3.684809351751542E-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 17.9   n/a MPO455792  

393842 (2005 SG128)          Discovered 2005-Sep-29 by LONEOS at Anderson Mesa
Reference: Last Updated: 2014-05-15

Alternate Designations
 2005 SG128 = 1995 WR14 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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