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JPL Small-Body Database Browser
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20218 Dukewriter (1997 GT34)
Classification: Main-belt Asteroid          SPK-ID: 2020218
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1237809314265141 3.6255e-08  
a 3.04263716512263 2.1125e-08 au
q 2.666016702830822 1.0773e-07 au
i .8925916300713385 3.6221e-06 deg
node 91.12763569611387 0.00028769 deg
peri 132.8460485645696 0.00028819 deg
M 32.15119022712205 1.7264e-05 deg
tp 2458427.371634148855
(2018-Nov-04.87163415)
9.2593e-05 TDB
period 1938.535129372447
5.31
2.0189e-05
5.527e-08
d
yr
n .1857072356055478 1.9341e-09 deg/d
Q 3.419257627414437 2.374e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1074  
   data-arc span      8628 days (23.62 yr)  
   first obs. used      1994-10-26  
   last obs. used      2018-06-10  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54574  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-12 23:38:00  

Additional Information
 Earth MOID = 1.65723 au 
 Jupiter MOID = 1.55909 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 14.3   n/a MPO302189  
diameter diameter 5.669 km 0.868 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
geometric albedo albedo 0.115   0.062 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

20218 Dukewriter           Discovered 1997 Apr. 3 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro.
Duke Writer mentored a finalist in the 2012 Intel Science Talent Search, a science competition for high-school seniors. He teaches at the Loudoun County Academy of Science, Sterling, Virginia.
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 GT34 = 1998 MH16 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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