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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 ]

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Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1710629480122376 3.6847e-08  
a 2.419980074916727 1.022e-08 au
q 2.006011149170596 9.2488e-08 au
i 4.81942886150116 3.9291e-06 deg
node 63.93681922315707 5.0111e-05 deg
peri 1.938549715970665 5.2042e-05 deg
M 357.5577435584346 1.6315e-05 deg
tp 2459405.828350916887
(2021-Jul-10.32835092)
6.2351e-05 TDB
period 1375.042470121076
3.76
8.7109e-06
2.385e-08
d
yr
n .2618100951953151 1.6586e-09 deg/d
Q 2.833949000662858 1.1969e-08 au
  Orbit Determination Parameters
   # obs. used (total)      729  
   data-arc span      10533 days (28.84 yr)  
   first obs. used      1992-03-02  
   last obs. used      2021-01-02  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .57275  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 14:15:05  

Additional Information
 Earth MOID = 1.0194 au 
 Jupiter MOID = 2.47019 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 15.87   n/a MPCxxxxx  

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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