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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 5 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .171741195009043 1.1782e-07  
a 2.647939055415532 5.5125e-08 AU
q 2.193178837727352 3.2342e-07 AU
i 1.072839333461297 1.2106e-05 deg
node 290.3398358379528 0.00054595 deg
peri 346.1480458481722 0.00054781 deg
M 305.1907333303645 3.6255e-05 deg
tp 2457240.113837908987
(2015-Aug-05.61383791)
0.00016008 JED
period 1573.83936857203
4.31
4.9147e-05
1.346e-07
d
yr
n .2287399890921739 7.1429e-09 deg/d
Q 3.102699273103712 6.4593e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      140  
   data-arc span      13283 days (36.37 yr)  
   first obs. used      1977-10-11  
   last obs. used      2014-02-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .52079  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jun-12 02:21:48  

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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