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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 ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2689408243565266 5.4695e-08  
a 2.703697102527997 2.4812e-08 au
q 1.976562574963765 1.5661e-07 au
i 11.11637644350607 7.4964e-06 deg
node 207.1620915363826 2.7999e-05 deg
peri 279.9365113234831 3.1977e-05 deg
M 281.2586524957017 1.2115e-05 deg
tp 2459355.669629423737
(2021-May-21.16962942)
5.5386e-05 TDB
period 1623.811004575018
4.45
2.2352e-05
6.12e-08
d
yr
n .2217006775946926 3.0518e-09 deg/d
Q 3.430831630092229 3.1484e-08 au
  Orbit Determination Parameters
   # obs. used (total)      256  
   data-arc span      6029 days (16.51 yr)  
   first obs. used      2004-04-24  
   last obs. used      2020-10-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54439  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-11 19:11:59  

Additional Information
 Earth MOID = 1.02636 au 
 Jupiter MOID = 1.8281 au 
 T_jup = 3.287 
[ show covariance matrix ]

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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