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JPL Small-Body Database Browser
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423598 (2005 WW21)
Classification: Main-belt Asteroid          SPK-ID: 2423598
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .02944505494997676 1.1065e-07  
a 2.607439274093156 3.5591e-08 au
q 2.530663081388755 2.7322e-07 au
i 5.511246950245877 7.1761e-06 deg
node 53.02318965595878 0.00011756 deg
peri 19.26373344338675 0.00055556 deg
M 154.384733115397 0.00051736 deg
tp 2458340.989701580785
(2018-Aug-10.48970158)
0.0022148 TDB
period 1537.87037513257
4.21
3.1488e-05
8.621e-08
d
yr
n .2340899505063726 4.793e-09 deg/d
Q 2.684215466797557 3.6639e-08 au
  Orbit Determination Parameters
   # obs. used (total)      104  
   data-arc span      5790 days (15.85 yr)  
   first obs. used      2003-03-30  
   last obs. used      2019-02-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52831  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-14 13:09:03  

Additional Information
 Earth MOID = 1.54517 au 
 Jupiter MOID = 2.38595 au 
 T_jup = 3.404 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 17.1   n/a MPO472255  

423598 (2005 WW21)          Discovered 2005-Nov-21 by Spacewatch at Kitt Peak
Reference: Last Updated: 2015-02-04
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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