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

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08871553025222993 3.4738e-08  
a 2.270025012233043 6.3905e-09 au
q 2.068638539586964 7.8842e-08 au
i 5.941701050808451 2.9729e-06 deg
node 243.7091920642943 3.5402e-05 deg
peri 250.7926580553041 4.0688e-05 deg
M 91.88242006726064 1.8505e-05 deg
tp 2458881.658887885518
(2020-Feb-02.15888789)
6.4543e-05 TDB
period 1249.235711000965
3.42
5.2752e-06
1.444e-08
d
yr
n .2881761999195057 1.2169e-09 deg/d
Q 2.471411484879122 6.9574e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2348  
   data-arc span      12528 days (34.30 yr)  
   first obs. used      1986-03-15  
   last obs. used      2020-07-02  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .4554  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 02:36:22  

Additional Information
 Earth MOID = 1.09177 au 
 Jupiter MOID = 2.57623 au 
 T_jup = 3.601 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.06   n/a E2021B10  

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 | Mission Design | Physical Parameters | Discovery Circumstances ]
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