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100087 (1993 BW9)
Classification: Main-belt Asteroid          SPK-ID: 2100087
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 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05247928072172219 5.2007e-08  
a 3.136209898030823 3.1775e-08 au
q 2.971623858389819 1.537e-07 au
i 4.682029725507796 5.4025e-06 deg
node 99.94194975359075 7.7488e-05 deg
peri 192.6955049114368 0.00010124 deg
M 172.7148970808346 6.7262e-05 deg
tp 2458027.229845304655
(2017-Sep-30.72984530)
0.00037822 TDB
period 2028.645250712446
5.55
3.083e-05
8.441e-08
d
yr
n .177458330811447 2.6969e-09 deg/d
Q 3.300795937671826 3.3443e-08 au
  Orbit Determination Parameters
   # obs. used (total)      432  
   data-arc span      9867 days (27.01 yr)  
   first obs. used      1993-01-22  
   last obs. used      2020-01-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54573  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-24 01:00:29  

Additional Information
 Earth MOID = 1.95564 au 
 Jupiter MOID = 1.80363 au 
 T_jup = 3.205 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456983.5 (2014-Nov-22.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0546429210339514 5.2541e-08  
q 2.964919312013196 1.5582e-07 au
tp 2455975.580175314320
(2012-Feb-18.08017531)
0.00035936 TDB
node 100.1292822097809 7.7174e-05 deg
peri 188.6436311629469 9.9065e-05 deg
i 4.690248713730005 5.4151e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      432  
   data-arc span      9867 days (27.01 yr)  
   first obs. used      1993-01-22  
   last obs. used      2020-01-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54573  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-24 01:00:29  

Additional Information
 Jupiter MOID = 1.80363 au 
 T_jup = 3.205 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.760562356159677E-15 -8.058729645432613E-15 1.642353414987767E-12 4.886808706078383E-15 2.847707752715724E-13 -7.988710783638342E-17
q -8.058729645432613E-15 2.42790466120419E-14 -4.852283048470654E-12 -1.233203250506147E-14 -7.742673696930736E-13 9.010408665587067E-16
tp 1.642353414987767E-12 -4.852283048470654E-12 1.29141784955898E-7 8.182234069802149E-11 2.237595405514745E-8 -7.277116398266162E-12
node 4.886808706078383E-15 -1.233203250506147E-14 8.182234069802149E-11 5.955880507686174E-9 -5.920481395336619E-9 -2.194286248044631E-11
peri 2.847707752715724E-13 -7.742673696930736E-13 2.237595405514745E-8 -5.920481395336619E-9 9.813905561885151E-9 2.061871727917059E-11
i -7.988710783638342E-17 9.010408665587067E-16 -7.277116398266162E-12 -2.194286248044631E-11 2.061871727917059E-11 2.932326898020771E-11

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 15.1   n/a MPO333616  

100087 (1993 BW9)          Discovered 1993-Jan-22 by Spacewatch at Kitt Peak
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

[ show close-approach data ]
Alternate Designations
 1993 BW9 = 2001 QK208 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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