Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Near-Earth Object (NEO) Program
Search JPL
JPL Home Earth Solar System Stars & Galaxies Technology
JPL Solar System Dynamics
BODIES ORBITS EPHEMERIDES TOOLS PHYSICAL DATA DISCOVERY FAQ SITE MAP
JPL Small-Body Database Browser
Search: [ help ]  
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 2457400.5 (2016-Jan-13.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2187268272094858 5.4451e-08  
a 2.278548058795669 1.4049e-08 au
q 1.780168471250959 1.218e-07 au
i 7.182230369563196 5.0226e-06 deg
node 92.31483423657647 4.7189e-05 deg
peri 227.9330575494251 4.9126e-05 deg
M 160.5608151269865 1.2619e-05 deg
tp 2456840.197216444023
(2014-Jul-01.69721644)
4.4713e-05 JED
period 1256.277890222601
3.44
1.1619e-05
3.181e-08
d
yr
n .2865608021933836 2.6504e-09 deg/d
Q 2.776927646340378 1.7122e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1142  
   data-arc span      9159 days (25.08 yr)  
   first obs. used      1990-11-19  
   last obs. used      2015-12-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .56618  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Jan-04 13:34:06  

Additional Information
 Earth MOID = .774331 au 
 Jupiter MOID = 2.53219 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 MPO347654  

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 ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2016-Feb-14 14:42 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin