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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 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 5 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .02613285896505508 7.0377e-08  
a 3.001682717274172 3.2338e-08 AU
q 2.923240166165802 2.1323e-07 AU
i 10.33750372689027 6.9799e-06 deg
node 170.8447739718819 3.1527e-05 deg
peri 27.01409662899622 0.00011036 deg
M 108.6453311812667 0.00010408 deg
tp 2456427.236657899634
(2013-May-14.73665790)
0.00055093 JED
period 1899.527581280144
5.20
3.0696e-05
8.404e-08
d
yr
n .1895208069352624 3.0627e-09 deg/d
Q 3.080125268382541 3.3183e-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 = 1.92815 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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