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JPL Small-Body Database Browser
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172596 (2003 WA21)
Classification: Main-belt Asteroid          SPK-ID: 2172596
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1378293967996845 5.9324e-08  
a 2.380562646928747 1.5875e-08 au
q 2.052451133258697 1.4301e-07 au
i 5.160741836812062 6.4794e-06 deg
node 304.2565713674726 6.2572e-05 deg
peri 56.3234677089898 6.7247e-05 deg
M 226.7700630052413 2.6465e-05 deg
tp 2459496.997619882044
(2021-Oct-09.49761988)
0.00010088 TDB
period 1341.583935182432
3.67
1.342e-05
3.674e-08
d
yr
n .2683395280452924 2.6842e-09 deg/d
Q 2.708674160598796 1.8063e-08 au
  Orbit Determination Parameters
   # obs. used (total)      416  
   data-arc span      7453 days (20.41 yr)  
   first obs. used      1999-09-08  
   last obs. used      2020-02-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55044  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-24 16:51:51  

Additional Information
 Earth MOID = 1.05404 au 
 Jupiter MOID = 2.74375 au 
 T_jup = 3.520 
[ 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 16.2   n/a MPO320781  

172596 (2003 WA21)          Discovered 2003-Nov-19 by LINEAR at Socorro
Reference: 20071224/Numbers.arcLast Updated: 2007-12-22

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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