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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 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2190911893733096 5.4789e-08  
a 2.278102871081836 1.5099e-08 AU
q 1.778990603541765 1.2292e-07 AU
i 7.183559859133457 5.6959e-06 deg
node 92.31942656490094 4.9313e-05 deg
peri 227.9043143407539 5.1523e-05 deg
M 45.91205567374505 1.4583e-05 deg
tp 2456840.329451960645
(2014-Jul-01.82945196)
5.099e-05 JED
period 1255.909726715674
3.44
1.2486e-05
3.418e-08
d
yr
n .2866448060255373 2.8497e-09 deg/d
Q 2.777215138621907 1.8407e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      965  
   data-arc span      8800 days (24.09 yr)  
   first obs. used      1990-11-19  
   last obs. used      2014-12-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .547  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Jan-08 02:31:48  

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 (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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