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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 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 6 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1717411809929654 1.0599e-07  
a 2.647939048439577 4.8259e-08 AU
q 2.193178869063175 3.0258e-07 AU
i 1.072842497649001 1.0711e-05 deg
node 290.3400002143325 0.00045871 deg
peri 346.1478769947002 0.00046015 deg
M 305.1907399285896 2.7003e-05 deg
tp 2457240.113808116136
(2015-Aug-05.61380812)
0.00011688 JED
period 1573.839362352646
4.31
4.3025e-05
1.178e-07
d
yr
n .228739989996092 6.2532e-09 deg/d
Q 3.102699227815979 5.6547e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      149  
   data-arc span      13768 days (37.69 yr)  
   first obs. used      1977-10-11  
   last obs. used      2015-06-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .5067  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Jul-06 16:09:22  

Additional Information
 Earth MOID = 1.17821 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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