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18741 (1998 WB6)
Classification: Main-belt Asteroid          SPK-ID: 2018741
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457600.5 (2016-Jul-31.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08860862438369418 6.1869e-08  
a 2.270225904721145 1.2565e-08 au
q 2.069064310263577 1.454e-07 au
i 5.939014624233823 5.8312e-06 deg
node 243.7421257443727 4.8886e-05 deg
peri 251.2913241481161 6.0609e-05 deg
M 350.3920315608513 3.7218e-05 deg
tp 2457633.845029526587
(2016-Sep-02.34502953)
0.00012923 JED
period 1249.401546809721
3.42
1.0373e-05
2.84e-08
d
yr
n .2881379496601716 2.3922e-09 deg/d
Q 2.471387499178713 1.3679e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1232  
   data-arc span      10970 days (30.03 yr)  
   first obs. used      1986-03-15  
   last obs. used      2016-03-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .49095  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Apr-25 13:30:38  

Additional Information
 Earth MOID = 1.09096 au 
 Jupiter MOID = 2.58073 au 
 T_jup = 3.601 
[ 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 14.0 mag n/a MPO358811  

18741 (1998 WB6)          Discovered 1998-Nov-18 by Ueda, S., Kaneda, H. at Kushiro
Reference: 20001111/Numbers.arcLast Updated: 2004-04-19
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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