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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 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05247928877479418 5.1381e-08  
a 3.136209904857013 3.1056e-08 au
q 2.971623839601652 1.5254e-07 au
i 4.682029719322119 5.3777e-06 deg
node 99.94194748337979 7.6179e-05 deg
peri 192.6954971129251 9.9807e-05 deg
M 172.7149054572365 6.6821e-05 deg
tp 2458027.229794924987
(2017-Sep-30.72979493)
0.00037535 TDB
period 2028.645257335688
5.55
3.0133e-05
8.25e-08
d
yr
n .1774583302320704 2.6359e-09 deg/d
Q 3.300795970112374 3.2686e-08 au
  Orbit Determination Parameters
   # obs. used (total)      436  
   data-arc span      10136 days (27.75 yr)  
   first obs. used      1993-01-22  
   last obs. used      2020-10-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54539  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 20:08:07  

Additional Information
 Earth MOID = 1.95564 au 
 Jupiter MOID = 1.80363 au 
 T_jup = 3.205 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457069.5 (2015-Feb-16.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05409453298490675 5.1735e-08  
q 2.968129179769004 1.5404e-07 au
tp 2458005.962876132492
(2017-Sep-09.46287613)
0.00036339 TDB
node 100.1242759709831 7.591e-05 deg
peri 188.7886039925877 9.8158e-05 deg
i 4.688732069577141 5.3878e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      436  
   data-arc span      10136 days (27.75 yr)  
   first obs. used      1993-01-22  
   last obs. used      2020-10-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54539  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 20:08:07  

Additional Information
 Jupiter MOID = 1.80363 au 
 T_jup = 3.205 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.676559731473092E-15 -7.843555817261842E-15 2.630965311928295E-12 4.662658503562056E-15 3.594683008007571E-13 -1.553607558783835E-16
q -7.843555817261842E-15 2.372763319775217E-14 -6.744907861588243E-12 -7.767368538004608E-15 -9.537051039074217E-13 9.297069315434644E-16
tp 2.630965311928295E-12 -6.744907861588243E-12 1.320522263884357E-7 9.483445323221518E-11 2.265662739374017E-8 -6.7953339222936E-12
node 4.662658503562056E-15 -7.767368538004608E-15 9.483445323221518E-11 5.762309422070122E-9 -5.726311684641544E-9 -1.439354506624562E-11
peri 3.594683008007571E-13 -9.537051039074217E-13 2.265662739374017E-8 -5.726311684641544E-9 9.635047038294995E-9 1.308888859981157E-11
i -1.553607558783835E-16 9.297069315434644E-16 -6.7953339222936E-12 -1.439354506624562E-11 1.308888859981157E-11 2.902818402133467E-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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