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85811 (1998 WD17)
Classification: Main-belt Asteroid          SPK-ID: 2085811
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1721458586403832 5.5146e-08  
a 2.420472683992968 1.215e-08 au
q 2.003798335491406 1.3235e-07 au
i 4.826063380514925 5.763e-06 deg
node 63.99764671988236 6.1567e-05 deg
peri 1.356236900873866 6.3538e-05 deg
M 149.924225985801 1.5952e-05 deg
tp 2458027.680201456859
(2017-Oct-01.18020146)
5.9473e-05 TDB
period 1375.462345192036
3.77
1.0356e-05
2.835e-08
d
yr
n .2617301747724242 1.9706e-09 deg/d
Q 2.83714703249453 1.4241e-08 au
  Orbit Determination Parameters
   # obs. used (total)      609  
   data-arc span      9929 days (27.18 yr)  
   first obs. used      1992-03-02  
   last obs. used      2019-05-09  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .59495  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 05:56:04  

Additional Information
 Earth MOID = 1.0171 au 
 Jupiter MOID = 2.46861 au 
 T_jup = 3.489 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.8   n/a MPO436375  

85811 (1998 WD17)          Discovered 1998-Nov-21 by LINEAR at Socorro
Reference: 20040830/Numbers.arcLast Updated: 2004-09-06

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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