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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 2456800.5 (2014-May-23.0) TDB
Reference: JPL 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .008281172645461009 7.2356e-08  
a 2.717952573718198 3.0596e-08 AU
q 2.695444739213062 1.983e-07 AU
i 3.026235293114298 8.3006e-06 deg
node 37.81941610161053 0.00013264 deg
peri 305.0404368144087 0.00050781 deg
M 105.7872266496446 0.00048625 deg
tp 2456319.558814795799
(2013-Jan-27.05881480)
0.0022134 JED
period 1636.670438926702
4.48
2.7636e-05
7.566e-08
d
yr
n .2199587598319924 3.7141e-09 deg/d
Q 2.740460408223333 3.0849e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      585  
   data-arc span      13305 days (36.43 yr)  
   first obs. used      1977-10-18  
   last obs. used      2014-03-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .54027  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jun-09 22:38:50  

Additional Information
 Earth MOID = 1.6855 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 14.5 mag n/a MPO267783  

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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