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20217 Kathyclemmer (1997 GK33)
Classification: Main-belt Asteroid          SPK-ID: 2020217
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 33 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08143920151701969 3.9517e-08  
a 3.035175054221843 1.5025e-08 au
q 2.78799282134164 1.2663e-07 au
i 7.97234508497972 4.815e-06 deg
node 199.046194986527 2.4978e-05 deg
peri 214.2935304947607 3.9557e-05 deg
M 347.9914973542532 3.1705e-05 deg
tp 2459460.925886091826
(2021-Sep-03.42588609)
0.00017021 TDB
period 1931.40807619942
5.29
1.4341e-05
3.926e-08
d
yr
n .1863925104364271 1.384e-09 deg/d
Q 3.282357287102047 1.6248e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1982  
   data-arc span      10673 days (29.22 yr)  
   first obs. used      1992-04-27  
   last obs. used      2021-07-17  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .47336  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 21:47:22  

Additional Information
 Earth MOID = 1.80197 au 
 Jupiter MOID = 2.08111 au 
 T_jup = 3.222 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.26   n/a E2021B10  
diameter diameter 7.290 km 0.234 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.210   0.020 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

20217 Kathyclemmer           Discovered 1997 Apr. 3 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro.
Kathy Clemmer mentored a finalist in the 2012 Intel Science Talent Search, a science competition for high-school seniors. She teaches at the El Segundo High School, El Segundo, California.
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

Alternate Designations
 1997 GK33 = 1999 RA17 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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