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

[ show orbit diagram ]
Orbital Elements at Epoch 2457400.5 (2016-Jan-13.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1222778695229792 4.9435e-08  
a 3.040970454035574 2.6652e-08 au
q 2.669127065633778 1.4029e-07 au
i .8931213444296673 4.4817e-06 deg
node 91.10279594707859 0.00033979 deg
peri 133.1036717447777 0.00034027 deg
M 168.8782358369163 2.1436e-05 deg
tp 2456491.868245089371
(2013-Jul-18.36824509)
0.00011357 JED
period 1936.942496744875
5.30
2.5464e-05
6.972e-08
d
yr
n .1858599316216136 2.4434e-09 deg/d
Q 3.412813842437371 2.9911e-08 au
  Orbit Determination Parameters
   # obs. used (total)      956  
   data-arc span      7694 days (21.07 yr)  
   first obs. used      1994-10-26  
   last obs. used      2015-11-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .56593  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Nov-30 16:33:28  

Additional Information
 Earth MOID = 1.65955 au 
 Jupiter MOID = 1.56355 au 
 T_jup = 3.228 
[ 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 14.3 mag n/a MPO302189  

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