Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Near-Earth Object (NEO) Program
Search JPL
JPL Home Earth Solar System Stars & Galaxies Technology
JPL Solar System Dynamics
BODIES ORBITS EPHEMERIDES TOOLS PHYSICAL DATA DISCOVERY FAQ SITE MAP
JPL Small-Body Database Browser
Search: [ help ]  
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 7 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1717411729254166 1.0529e-07  
a 2.647939041918473 4.727e-08 AU
q 2.193178885024391 3.0162e-07 AU
i 1.072842067212943 1.0579e-05 deg
node 290.339951023427 0.00042258 deg
peri 346.1479226235165 0.00042403 deg
M 305.1907452814405 2.5758e-05 deg
tp 2457240.113783829522
(2015-Aug-05.61378383)
0.00011095 JED
period 1573.839356538783
4.31
4.2144e-05
1.154e-07
d
yr
n .228739990841072 6.1251e-09 deg/d
Q 3.102699198812556 5.5389e-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 = 1.17821 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 ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2015-Sep-03 21:26 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin