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101487 (1998 WB40)
Classification: Mars-crossing Asteroid          SPK-ID: 2101487
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 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3402577175836368 4.1373e-08  
a 2.356246132936448 1.1302e-08 au
q 1.554515201678222 9.6963e-08 au
i 22.89920040277467 8.4853e-06 deg
node 60.86385782343851 1.2935e-05 deg
peri 267.529156883185 1.8058e-05 deg
M 31.38856994332435 1.3767e-05 deg
tp 2458885.314333909826
(2020-Feb-05.81433391)
4.9994e-05 TDB
period 1321.080886046605
3.62
9.5054e-06
2.602e-08
d
yr
n .2725041318834885 1.9607e-09 deg/d
Q 3.157977064194674 1.5148e-08 au
  Orbit Determination Parameters
   # obs. used (total)      425  
   data-arc span      8022 days (21.96 yr)  
   first obs. used      1998-11-11  
   last obs. used      2020-10-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .60918  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 20:00:19  

Additional Information
 Earth MOID = .729186 au 
 Jupiter MOID = 2.62983 au 
 T_jup = 3.374 
[ 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 16.0   n/a MPO474890  

101487 (1998 WB40)          Discovered 1998-Nov-22 by Spacewatch at Kitt Peak
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

[ show close-approach data ]
Alternate Designations
 1998 WB40 = 2001 LP15 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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