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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 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .008373730928069988 7.2551e-08  
a 2.719315094808187 2.8023e-08 AU
q 2.696544281895624 1.9747e-07 AU
i 3.025489505545968 7.5106e-06 deg
node 37.7646445333778 0.00013257 deg
peri 309.9480013926689 0.00043865 deg
M 144.8537171174691 0.00041592 deg
tp 2456341.455302043257
(2013-Feb-17.95530204)
0.0018942 JED
period 1637.901297845361
4.48
2.5319e-05
6.932e-08
d
yr
n .2197934640344785 3.3976e-09 deg/d
Q 2.74208590772075 2.8258e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      607  
   data-arc span      13610 days (37.26 yr)  
   first obs. used      1977-10-18  
   last obs. used      2015-01-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .53564  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Feb-04 13:56:14  

Additional Information
 Earth MOID = 1.68925 AU 
 T_jup = 3.357 
[ 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 14.6 mag n/a MPO319337  

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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