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22005 Willnelson (1999 XK47)
Classification: Main-belt Asteroid          SPK-ID: 2022005
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 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07188910957406726 3.2697e-08  
a 3.01239095725277 1.6159e-08 au
q 2.795832853646897 9.4813e-08 au
i .8807975803307284 3.6583e-06 deg
node 320.4050857505051 0.00025613 deg
peri 315.647886071609 0.00025787 deg
M 149.7753563363783 3.1005e-05 deg
tp 2458405.982823658615
(2018-Oct-14.48282366)
0.00016361 TDB
period 1909.701238436826
5.23
1.5366e-05
4.207e-08
d
yr
n .1885111622458159 1.5168e-09 deg/d
Q 3.228949060858644 1.732e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1229  
   data-arc span      9985 days (27.34 yr)  
   first obs. used      1993-09-15  
   last obs. used      2021-01-16  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .51531  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 03:57:33  

Additional Information
 Earth MOID = 1.77766 au 
 Jupiter MOID = 1.84837 au 
 T_jup = 3.245 
[ 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 MPO358838  

22005 Willnelson           Discovered 1999 Dec. 7 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro.
William Nelson mentored a finalist in the 2005 Discovery Channel Young Scientist Challenge (DCYSC), a middle school science competition. He teaches at the Citrus Springs Middle School, Citrus Springs, Florida.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20051019/MPCPages.arcLast Updated: 2005-10-26

[ show close-approach data ]
Alternate Designations
 1999 XK47 = 1993 RQ19 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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