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JPL Small-Body Database Browser
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410687 (2008 WR128)
Classification: Main-belt Asteroid          SPK-ID: 2410687
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 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1329562802546109 4.8187e-08  
a 2.196226044156612 3.0514e-08 au
q 1.90422399872725 9.8349e-08 au
i 4.823326039280366 5.0217e-06 deg
node 71.63264999821507 0.00011799 deg
peri 178.556026195586 0.00012643 deg
M 13.34813484321121 4.7517e-05 deg
tp 2458956.420966091497
(2020-Apr-16.92096609)
0.00015657 TDB
period 1188.814197148421
3.25
2.4776e-05
6.783e-08
d
yr
n .3028227631058941 6.3111e-09 deg/d
Q 2.488228089585975 3.4572e-08 au
  Orbit Determination Parameters
   # obs. used (total)      100  
   data-arc span      3228 days (8.84 yr)  
   first obs. used      2008-11-21  
   last obs. used      2017-09-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .66145  
   source      ORB  
   producer      Otto Matic  
   solution date      2018-Oct-04 11:57:00  

Additional Information
 Earth MOID = .890069 au 
 Jupiter MOID = 2.53562 au 
 T_jup = 3.652 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457299.5 (2015-Oct-04.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1330804000427988 4.8204e-08  
q 1.903448288503442 9.824e-08 au
tp 2457767.258560648554
(2017-Jan-13.75856065)
0.00014873 TDB
node 71.66471856517045 0.000118 deg
peri 178.4199065466487 0.00012644 deg
i 4.823628033150103 5.022e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      100  
   data-arc span      3228 days (8.84 yr)  
   first obs. used      2008-11-21  
   last obs. used      2017-09-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .66145  
   source      ORB  
   producer      Otto Matic  
   solution date      2018-Oct-04 11:57:00  

Additional Information
 Jupiter MOID = 2.53562 au 
 T_jup = 3.652 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.323656491413792E-15 -4.587782256020486E-15 2.801013514569069E-12 -7.367233128415946E-14 8.3600021581147E-13 6.046019876743404E-16
q -4.587782256020486E-15 9.651102118641762E-15 -5.216074652848728E-12 1.515146306594898E-13 -1.626118052945399E-12 -1.210150142392546E-16
tp 2.801013514569069E-12 -5.216074652848728E-12 2.212028502612739E-8 -5.233384150106678E-10 6.891219826034898E-9 -1.163646204070394E-11
node -7.367233128415946E-14 1.515146306594898E-13 -5.233384150106678E-10 1.392474198916119E-8 -1.402679646602502E-8 1.937171996926551E-10
peri 8.3600021581147E-13 -1.626118052945399E-12 6.891219826034898E-9 -1.402679646602502E-8 1.598799984053409E-8 -1.965558461885114E-10
i 6.046019876743404E-16 -1.210150142392546E-16 -1.163646204070394E-11 1.937171996926551E-10 -1.965558461885114E-10 2.522040866635203E-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 18.0   n/a MPO419025  

410687 (2008 WR128)          Discovered 2008-Nov-21 by Spacewatch at Kitt Peak
Reference: Last Updated: 2014-10-09

Alternate Designations
 2008 WR128 = 2010 KA36 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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