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20205 Sitanchen (1997 EJ34)
Classification: Main-belt Asteroid          SPK-ID: 2020205
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457600.5 (2016-Jul-31.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .009478118683970169 7.2434e-08  
a 2.716734950500537 2.4618e-08 au
q 2.690985414206803 1.9567e-07 au
i 3.026907567315211 6.3968e-06 deg
node 37.71791346854594 0.00013062 deg
peri 313.1785653010074 0.00034215 deg
M 273.6314698696326 0.0003166 deg
tp 2457992.894001384294
(2017-Aug-27.39400138)
0.0014388 JED
period 1635.570737224779
4.48
2.2231e-05
6.087e-08
d
yr
n .2201066525626672 2.9918e-09 deg/d
Q 2.74248448679427 2.4851e-08 au
  Orbit Determination Parameters
   # obs. used (total)      758  
   data-arc span      13749 days (37.64 yr)  
   first obs. used      1977-10-18  
   last obs. used      2015-06-10  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .52197  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Jul-06 12:26:33  

Additional Information
 Earth MOID = 1.68312 au 
 Jupiter MOID = 2.26325 au 
 T_jup = 3.358 
[ 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 14.7 mag n/a MPO337429  

20205 Sitanchen           Discovered 1997 Mar. 4 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro.
Sitan Chen (b. 1995) is a finalist in the 2012 Intel Science Talent Search, a science competition for high-school seniors, for his mathematics project. He attends the Northview High School, Duluth, Georgia.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20120506/MPCPages.arcLast Updated: 2012-05-09

[ show close-approach data ]
Alternate Designations
 1997 EJ34 = 1977 UZ3 = 1999 RR171 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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