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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1711222488200722 4.1931e-08  
a 2.421515686905926 1.0931e-08 au
q 2.007140477009502 1.033e-07 au
i 4.819831512353075 4.7165e-06 deg
node 63.96243462518924 5.2408e-05 deg
peri 1.68306565075104 5.4301e-05 deg
M 254.1414482770629 1.5997e-05 deg
tp 2459405.218264729690
(2021-Jul-09.71826473)
6.2623e-05 TDB
period 1376.351489145859
3.77
9.3193e-06
2.551e-08
d
yr
n .2615610931066816 1.771e-09 deg/d
Q 2.83589089680235 1.2801e-08 au
  Orbit Determination Parameters
   # obs. used (total)      674  
   data-arc span      10376 days (28.41 yr)  
   first obs. used      1992-03-02  
   last obs. used      2020-07-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58368  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-25 07:57:38  

Additional Information
 Earth MOID = 1.02078 au 
 Jupiter MOID = 2.46815 au 
 T_jup = 3.488 
[ 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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