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17697 Evanchen (1997 EQ41)
Classification: Main-belt Asteroid          SPK-ID: 2017697
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0294167043659603 4.5221e-08  
a 2.998945196872619 1.4047e-08 au
q 2.9107261126065 1.3322e-07 au
i 10.34209396741601 4.986e-06 deg
node 170.6430354047228 1.6777e-05 deg
peri 24.92256050243186 6.2001e-05 deg
M 167.8664308999496 6.111e-05 deg
tp 2458315.969979823258
(2018-Jul-16.46997982)
0.00032043 TDB
period 1896.929633616954
5.19
1.3327e-05
3.649e-08
d
yr
n .1897803659240502 1.3334e-09 deg/d
Q 3.087164281138737 1.446e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1758  
   data-arc span      10577 days (28.96 yr)  
   first obs. used      1992-02-27  
   last obs. used      2021-02-11  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .46306  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 02:10:22  

Additional Information
 Earth MOID = 1.91372 au 
 Jupiter MOID = 1.87197 au 
 T_jup = 3.228 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.53   n/a E2021B10  
diameter diameter 6.823 km 0.372 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 1.13 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 lower-limit; Incomplete or inconclusive result.
Published Reference List:
[Erasmus, N.; McNeill, A.; Mommert, M.; Trilling, D.E.; et al. (2018) Ap. J. Suppl. Series 237, A19.]
[Erasmus, N.; McNeill, A.; Mommert, N.; Trilling, D.E.; et al. (2019) Ap. J. Suppl. Series 242, A15.]
geometric albedo albedo 0.115   0.032 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

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 | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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