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100172 (1993 WL)
Classification: Main-belt Asteroid          SPK-ID: 2100172
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09686235532447569 9.4501e-08  
a 2.526775949146777 1.5854e-08 au
q 2.282026479335182 2.4051e-07 au
i 3.753393447643764 4.3568e-06 deg
node 244.9934759953726 9.0176e-05 deg
peri 328.8355090189393 0.00010301 deg
M 49.4091697261866 5.4739e-05 deg
tp 2458799.149095979376
(2019-Nov-11.64909598)		 0.0002227 TDB
period 1467.062204224966
4.02		 1.3807e-05
3.78e-08		 d
yr
n .2453883679664315 2.3095e-09 deg/d
Q 2.771525418958371 1.739e-08 au
   Orbit Determination Parameters
   # obs. used (total)      609  
   data-arc span      9239 days (25.30 yr)  
   first obs. used      1993-11-17  
   last obs. used      2019-03-05  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55721  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-24 01:01:47  

Additional Information
 Earth MOID = 1.27623 au 
 Jupiter MOID = 2.20423 au 
 T_jup = 3.443 
[ 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 15.8   n/a MPO426629  

100172 (1993 WL)          Discovered 1993-Nov-17 by Spacewatch at Kitt Peak
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

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Alternate Designations
 1993 WL = 1999 DL9 
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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