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JPL Small-Body Database Browser
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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1711222513211498 5.3846e-08  
a 2.421515687331777 1.2206e-08 au
q 2.007140471306082 1.2902e-07 au
i 4.81983294543907 5.7267e-06 deg
node 63.96242577180774 5.6169e-05 deg
peri 1.68307417011147 5.8021e-05 deg
M 254.1414482710447 1.6e-05 deg
tp 2459405.218264859461
(2021-Jul-09.71826486)
6.2631e-05 TDB
period 1376.35148950893
3.77
1.0407e-05
2.849e-08
d
yr
n .2615610930376839 1.9777e-09 deg/d
Q 2.835890903357472 1.4295e-08 au
  Orbit Determination Parameters
   # obs. used (total)      639  
   data-arc span      9960 days (27.27 yr)  
   first obs. used      1992-03-02  
   last obs. used      2019-06-09  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .59286  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 20:38:57  

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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