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JPL Small-Body Database Browser
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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 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 9 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2687378564663868 6.7879e-08  
a 2.703651948516443 3.295e-08 au
q 1.977078319240964 1.8451e-07 au
i 11.11622161607214 9.4413e-06 deg
node 207.1648939652561 3.8842e-05 deg
peri 279.9723443797606 4.3329e-05 deg
M 192.5021585997834 1.5075e-05 deg
tp 2459355.994512705447
(2021-May-21.49451271)
7.0728e-05 TDB
period 1623.770326234241
4.45
2.9684e-05
8.127e-08
d
yr
n .2217062315918115 4.053e-09 deg/d
Q 3.430225577791921 4.1805e-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 = 1.0272 au 
 Jupiter MOID = 1.82975 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 = 1.82975 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

[ hide close-approach data ]
Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
1925-Jun-24 10:17 04:54 Jupiter 1.99606230677467 1.9960598513714 1.99606478635793 1.25521869905422 0.852572882161004 2424325.928636961 294.43159734006 15993.1066297025 397.162398277363 69.82017202563 1182415.98427668 T 9 CATAB v2.0e-lin.ifort 2017-Nov-25 05:20:56 2018-Dec-18 00:44
1961-Jan-28 00:28 03:27 Jupiter 1.9911340710193 1.99113240990333 1.99113574376345 1.19068557731642 0.752952912460628 2437327.519336031 206.852289318257 13420.2629992166 547.27640458116 68.4912071449115 1170177.52983342 T 9 CATAB v2.0e-lin.ifort 2017-Nov-25 05:20:56 2018-Dec-18 00:44

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