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23172 Williamartin (2000 HU22)
Classification: Main-belt Asteroid          SPK-ID: 2023172
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457600.5 (2016-Jul-31.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .03906713279607484 6.0626e-08  
a 2.293840404468575 1.2034e-08 au
q 2.204226636774199 1.3596e-07 au
i .270050042378016 5.7429e-06 deg
node 247.7434877867303 0.0010467 deg
peri 349.3735416580132 0.001049 deg
M 228.761958673861 6.435e-05 deg
tp 2458063.094498591207
(2017-Nov-05.59449859)
0.00022644 JED
period 1268.946243101738
3.47
9.9856e-06
2.734e-08
d
yr
n .283699961252919 2.2325e-09 deg/d
Q 2.383454172162951 1.2504e-08 au
  Orbit Determination Parameters
   # obs. used (total)      864  
   data-arc span      8823 days (24.16 yr)  
   first obs. used      1992-01-01  
   last obs. used      2016-02-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .54427  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Mar-24 16:45:04  

Additional Information
 Earth MOID = 1.19169 au 
 Jupiter MOID = 2.59261 au 
 T_jup = 3.595 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.6 mag n/a MPO302205  

23172 Williamartin           Discovered 2000 Apr. 29 by the Lincoln Laboratory Near-Earth Asteroid Research Team in Socorro.
William Campbell Martin (b. 1989) was awarded first place and Best in Category in the 2007 Intel International Science and Engineering Fair for his materials and bioengineering project. He attends the Saginaw Arts and Sciences Academy, Saginaw, Michigan, U.S.A.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20070828/MPCPages.arcLast Updated: 2007-08-30

Alternate Designations
 2000 HU22 = 1998 WJ4 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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