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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 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2190911777683562 5.4645e-08  
a 2.278102874194311 1.5055e-08 AU
q 1.778990632409602 1.2252e-07 AU
i 7.183559503239009 5.6709e-06 deg
node 92.31942408389068 4.9126e-05 deg
peri 227.9043157809883 5.134e-05 deg
M 45.91205477572424 1.4563e-05 deg
tp 2456840.329454765263
(2014-Jul-01.82945477)
5.0925e-05 JED
period 1255.909729289518
3.44
1.245e-05
3.409e-08
d
yr
n .2866448054380914 2.8415e-09 deg/d
Q 2.77721511597902 1.8353e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1047  
   data-arc span      8865 days (24.27 yr)  
   first obs. used      1990-11-19  
   last obs. used      2015-02-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .53443  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Mar-09 14:46:50  

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 14.2 mag n/a MPO319291  

16517 (1990 WD)          Discovered 1990-Nov-19 by McNaught, R. H. at Siding Spring
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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