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186730 (2004 CH4)
Classification: Main-belt Asteroid          SPK-ID: 2186730
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2208909691987369 4.9005e-08  
a 2.325059999453506 1.416e-08 au
q 1.811475242729007 1.2058e-07 au
i 3.970817384237455 5.1195e-06 deg
node 91.26609911283916 0.00010732 deg
peri 340.5709242847719 0.00010981 deg
M 314.8954067615683 2.5415e-05 deg
tp 2459362.743737977418
(2021-May-28.24373798)
9.2453e-05 TDB
period 1294.940082113499
3.55
1.1829e-05
3.239e-08
d
yr
n .2780051409115675 2.5396e-09 deg/d
Q 2.838644756178006 1.7288e-08 au
  Orbit Determination Parameters
   # obs. used (total)      220  
   data-arc span      7702 days (21.09 yr)  
   first obs. used      1999-10-08  
   last obs. used      2020-11-08  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .56162  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 21:52:28  

Additional Information
 Earth MOID = .826278 au 
 Jupiter MOID = 2.4492 au 
 T_jup = 3.539 
[ 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 17.47   n/a MPCxxxxx  

186730 (2004 CH4)          Discovered 2004-Feb-10 by NEAT at Palomar
Reference: 20080520/Numbers.arcLast Updated: 2008-05-22

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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