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236851 Chenchikwan (2007 RA139)
Classification: Main-belt Asteroid          SPK-ID: 2236851
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457400.5 (2016-Jan-13.0) TDB
Reference: JPL 7 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1719681938647487 1.0524e-07  
a 2.648577268269444 4.7327e-08 au
q 2.193106219133918 3.0166e-07 au
i 1.072686893126054 1.0578e-05 deg
node 290.3373249187594 0.00042264 deg
peri 346.1403896388711 0.00042408 deg
M 36.68168741139964 2.5134e-05 deg
tp 2457240.077897929746
(2015-Aug-05.57789793)
0.00011083 JED
period 1574.408398871628
4.31
4.2199e-05
1.155e-07
d
yr
n .2286573167788044 6.1287e-09 deg/d
Q 3.10404831740497 5.5465e-08 au
  Orbit Determination Parameters
   # obs. used (total)      156  
   data-arc span      13815 days (37.82 yr)  
   first obs. used      1977-10-11  
   last obs. used      2015-08-08  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .49989  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Sep-02 19:23:48  

Additional Information
 Earth MOID = 1.17516 au 
 Jupiter MOID = 2.01152 au 
 T_jup = 3.370 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 16.4 mag n/a MPO287983  

236851 Chenchikwan           Discovered 2007 Sept. 15 by C.-S. Lin and Q.-z. Ye at Lulin.
Chen Chi-Kwan (1921-2007) was a renowned Taiwanese artist and architect whose designs on the campus of National Central University are some of his masterpieces.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20120207/MPCPages.arcLast Updated: 2012-02-09

[ show close-approach data ]
Alternate Designations
 2007 RA139 = 2003 UC214 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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