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305459 (2008 DU18)
Classification: Main-belt Asteroid          SPK-ID: 2305459
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1202652455174796 5.3624e-08  
a 3.109446416605818 2.8809e-08 au
q 2.735488079889273 1.6187e-07 au
i 7.410992074171074 4.4301e-06 deg
node 154.6964689330475 4.3924e-05 deg
peri 85.06264824698472 5.1812e-05 deg
M 72.2711668216332 2.3021e-05 deg
tp 2458994.444869425103
(2020-May-24.94486943)
0.00012972 TDB
period 2002.732948316496
5.48
2.7833e-05
7.62e-08
d
yr
n .1797543702981554 2.4981e-09 deg/d
Q 3.483404753322364 3.2273e-08 au
  Orbit Determination Parameters
   # obs. used (total)      265  
   data-arc span      8943 days (24.48 yr)  
   first obs. used      1997-02-11  
   last obs. used      2021-08-07  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .62172  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 04:08:32  

Additional Information
 Earth MOID = 1.73677 au 
 Jupiter MOID = 1.57402 au 
 T_jup = 3.195 
[ hide covariance matrix ]
Orbital Elements at Epoch 2458089.5 (2017-Dec-02.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1179924557417091 5.3801e-08  
q 2.739376353699261 1.6115e-07 au
tp 2458992.076637033974
(2020-May-22.57663703)
0.0001326 TDB
node 154.7598345180092 4.404e-05 deg
peri 84.4853665005499 5.2226e-05 deg
i 7.401438746754903 4.4243e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      265  
   data-arc span      8943 days (24.48 yr)  
   first obs. used      1997-02-11  
   last obs. used      2021-08-07  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .62172  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 04:08:32  

Additional Information
 Jupiter MOID = 1.57402 au 
 T_jup = 3.195 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.894545343059384E-15 -8.575051484999577E-15 -6.178416202539809E-13 4.077172471486397E-15 -1.228155903238809E-13 -7.956103262969095E-15
q -8.575051484999577E-15 2.596963733399775E-14 9.840503980978837E-13 -9.206646976013702E-15 1.302439749963461E-13 2.554486574675791E-14
tp -6.178416202539809E-13 9.840503980978837E-13 1.758339062719426E-8 -1.762195790204723E-11 3.759544724460994E-9 1.42065564070989E-12
node 4.077172471486397E-15 -9.206646976013702E-15 -1.762195790204723E-11 1.939487595781596E-9 -1.926903156722179E-9 4.08359464578411E-11
peri -1.228155903238809E-13 1.302439749963461E-13 3.759544724460994E-9 -1.926903156722179E-9 2.727584623579333E-9 -4.033439320082632E-11
i -7.956103262969095E-15 2.554486574675791E-14 1.42065564070989E-12 4.08359464578411E-11 -4.033439320082632E-11 1.957426191214977E-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 16.10   n/a MPCxxxxx  

305459 (2008 DU18)          Discovered 2008-Feb-27 by Spacewatch at Kitt Peak
Reference: 20111110/Numbers.arcLast Updated: 2011-11-14

[ show close-approach data ]
Alternate Designations
 2008 DU18 = 2005 TU88 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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