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305439 (2008 CH186)
Classification: Main-belt Asteroid          SPK-ID: 2305439
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 9 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2689407782222129 6.7857e-08  
a 2.703697044482461 3.2599e-08 au
q 1.976562657262251 1.8436e-07 au
i 11.11638416896271 9.4415e-06 deg
node 207.1620667457876 3.8843e-05 deg
peri 279.9365458086236 4.3314e-05 deg
M 281.258661019064 1.5311e-05 deg
tp 2459355.669579540700
(2021-May-21.16957954)
7.0722e-05 TDB
period 1623.810952282744
4.45
2.9368e-05
8.041e-08
d
yr
n .2217006847342138 4.0097e-09 deg/d
Q 3.430831431702671 4.1367e-08 au
  Orbit Determination Parameters
   # obs. used (total)      201  
   data-arc span      4717 days (12.91 yr)  
   first obs. used      2004-04-24  
   last obs. used      2017-03-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55  
   source      ORB  
   producer      Otto Matic  
   solution date      2017-Apr-10 13:24:11  

Additional Information
 Earth MOID = 1.02636 au 
 Jupiter MOID = 1.8281 au 
 T_jup = 3.287 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456940.5 (2014-Oct-10.0) TDB
Reference: JPL 9 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2673840496537314 6.8341e-08  
q 1.982642040548896 1.86e-07 au
tp 2457731.802730876514
(2016-Dec-09.30273088)
6.9022e-05 TDB
node 207.2035850029418 3.882e-05 deg
peri 280.0235498087465 4.3336e-05 deg
i 11.1133129559285 9.4438e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      201  
   data-arc span      4717 days (12.91 yr)  
   first obs. used      2004-04-24  
   last obs. used      2017-03-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55  
   source      ORB  
   producer      Otto Matic  
   solution date      2017-Apr-10 13:24:11  

Additional Information
 Jupiter MOID = 1.8281 au 
 T_jup = 3.287 
Orbit Covariance (6×6)
  e q tp node peri i
e 4.670445596165415E-15 -1.260211244340486E-14 2.135623234375572E-12 -3.237815979092014E-14 5.388382015387117E-13 -4.516028675668045E-14
q -1.260211244340486E-14 3.459542790418356E-14 -6.017036022303107E-12 8.781696031135382E-14 -1.608753597528532E-12 1.230812339553593E-13
tp 2.135623234375572E-12 -6.017036022303107E-12 4.764054134182494E-9 -2.020831906328019E-11 1.356497574414437E-9 -3.883454915638378E-11
node -3.237815979092014E-14 8.781696031135382E-14 -2.020831906328019E-11 1.506998626862545E-9 -1.483533092717796E-9 -1.471845420897253E-10
peri 5.388382015387117E-13 -1.608753597528532E-12 1.356497574414437E-9 -1.483533092717796E-9 1.87804027384016E-9 1.34586331492299E-10
i -4.516028675668045E-14 1.230812339553593E-13 -3.883454915638378E-11 -1.471845420897253E-10 1.34586331492299E-10 8.918568463316415E-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 16.5   n/a MPO494622  

305439 (2008 CH186)          Discovered 2008-Feb-02 by CSS at Catalina
Reference: 20111110/Numbers.arcLast Updated: 2011-11-14

[ show close-approach data ]
Alternate Designations
 2008 CH186 = 2004 HK51 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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