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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3402846430743073 3.8583e-08  
a 2.356688042530285 1.1249e-08 au
q 1.554743293140379 9.0177e-08 au
i 22.89717664736006 7.8616e-06 deg
node 60.86329328539126 1.1972e-05 deg
peri 267.5570456893662 1.6885e-05 deg
M 85.85377255110809 1.3751e-05 deg
tp 2458885.356425244806
(2020-Feb-05.85642524)
4.8957e-05 TDB
period 1321.452552878012
3.62
9.4612e-06
2.59e-08
d
yr
n .2724274883846192 1.9505e-09 deg/d
Q 3.15863279192019 1.5077e-08 au
  Orbit Determination Parameters
   # obs. used (total)      470  
   data-arc span      8095 days (22.16 yr)  
   first obs. used      1998-11-11  
   last obs. used      2021-01-09  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .59264  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 15:37:00  

Additional Information
 Earth MOID = .728131 au 
 Jupiter MOID = 2.6293 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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