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17697 Evanchen (1997 EQ41)
Classification: Main-belt Asteroid          SPK-ID: 2017697
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 5 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .02603508796058376 7.0381e-08  
a 3.001527709391094 3.2246e-08 AU
q 2.923382671460967 2.1314e-07 AU
i 10.33689850808176 6.9796e-06 deg
node 170.8507805239543 3.1531e-05 deg
peri 26.89385594035469 0.00011075 deg
M 70.86558446656741 0.00010458 deg
tp 2456426.609151812050
(2013-May-14.10915181)
0.00055296 JED
period 1899.380444835861
5.20
3.0608e-05
8.38e-08
d
yr
n .1895354882581779 3.0543e-09 deg/d
Q 3.07967274732122 3.3086e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      756  
   data-arc span      7786 days (21.32 yr)  
   first obs. used      1992-02-27  
   last obs. used      2013-06-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .56395  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jun-09 21:54:52  

Additional Information
 Earth MOID = 1.92743 AU 
 T_jup = 3.227 
[ 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 13.4 mag n/a MPO266049  

17697 Evanchen           Discovered 1997 Mar. 10 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro.
Evan Matthew Chen (b. 1993) is a finalist in the 2012 Intel Science Talent Search, a science competition for high-school seniors, for his bioengineering project. He attends the Wayzata High School, Plymouth, Minnesota.
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 EQ41 = 1998 KH52 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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