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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 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 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457847.5 (2017-Apr-04.0) TDB
Reference: JPL 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2674649991093132 5.526e-08  
q 1.982126257709286 1.5845e-07 au
tp 2457732.194250687995
(2016-Dec-09.69425069)
5.6361e-05 TDB
node 207.1882936765024 2.797e-05 deg
peri 280.1540285190562 3.1982e-05 deg
i 11.11665840322831 7.4989e-06 deg
  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
 Jupiter MOID = 1.8281 au 
 T_jup = 3.287 
Orbit Covariance (6×6)
  e q tp node peri i
e 3.053655326431525E-15 -8.708298800757682E-15 1.273490738672137E-12 -1.826327220157363E-14 4.190787183639375E-13 -1.813835426812357E-14
q -8.708298800757682E-15 2.51065960010077E-14 -3.691344610900693E-12 5.247210786307176E-14 -1.213375125502967E-12 5.242427578134592E-14
tp 1.273490738672137E-12 -3.691344610900693E-12 3.176519701727668E-9 -3.167728397882811E-12 8.923111698656891E-10 -1.688512866092523E-11
node -1.826327220157363E-14 5.247210786307176E-14 -3.167728397882811E-12 7.822964403119588E-10 -7.681667744683473E-10 -4.708914615561936E-11
peri 4.190787183639375E-13 -1.213375125502967E-12 8.923111698656891E-10 -7.681667744683473E-10 1.022869707211941E-9 4.143729082370364E-11
i -1.813835426812357E-14 5.242427578134592E-14 -1.688512866092523E-11 -4.708914615561936E-11 4.143729082370364E-11 5.623421193158947E-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 10:14 00:04 Jupiter 1.99606335481798 1.99606130959874 1.99606540032689 1.25523011287308 0.852589947639067 2424325.926519281 3.85281407907332 2679.08946519942 166.146094958009 40.2501265976758 1836950.65217046 T 11 CATAB v2.0f-lin.ifort 2020-Nov-11 19:12:00 2020-Nov-11 19:12
1961-Jan-28 00:26 00:02 Jupiter 1.99113453359041 1.99113309570174 1.99113597175967 1.19069239266131 0.75296382114126 2437327.518061986 2.42010480649154 2788.16888299199 160.022981160562 42.9033349121401 3065862.14518926 T 11 CATAB v2.0f-lin.ifort 2020-Nov-11 19:12:00 2020-Nov-11 19:12

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