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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 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .008373750693309118 7.2027e-08  
a 2.719315065109997 2.4853e-08 AU
q 2.696544198698206 1.9417e-07 AU
i 3.025490282432209 6.3911e-06 deg
node 37.764651329232 0.0001307 deg
peri 309.9484833499495 0.00038272 deg
M 144.8532379382112 0.00036017 deg
tp 2456341.457492973807
(2013-Feb-17.95749297)
0.0016381 JED
period 1637.901271013585
4.48
2.2454e-05
6.148e-08
d
yr
n .2197934676350917 3.0132e-09 deg/d
Q 2.742085931521788 2.5061e-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 = 1.68925 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 14.7 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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