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16517 (1990 WD)
Classification: Main-belt Asteroid          SPK-ID: 2016517
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2190911906695888 5.4942e-08  
a 2.278102870491954 1.5238e-08 AU
q 1.778990600128064 1.2341e-07 AU
i 7.183561304577905 5.8265e-06 deg
node 92.31943048029642 4.9434e-05 deg
peri 227.904310240213 5.1649e-05 deg
M 45.91205629552891 1.4839e-05 deg
tp 2456840.329449853676
(2014-Jul-01.82944985)
5.1842e-05 JED
period 1255.909726227875
3.44
1.2601e-05
3.45e-08
d
yr
n .286644806136871 2.8761e-09 deg/d
Q 2.777215140855844 1.8577e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      939  
   data-arc span      8746 days (23.95 yr)  
   first obs. used      1990-11-19  
   last obs. used      2014-10-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .55235  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Nov-10 13:27:08  

Additional Information
 Earth MOID = .775941 AU 
 T_jup = 3.565 
[ 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 14.1 mag n/a MPO266043  

16517 (1990 WD)          Discovered 1990-Nov-19 by McNaught, R. H. at Siding Spring (413)
Reference: 20000913/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1990 WD = 1993 MD1 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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