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109261 (2001 QB108)
Classification: Main-belt Asteroid          SPK-ID: 2109261
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 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1134099176656139 4.1676e-08  
a 3.168271360987142 3.1136e-08 au
q 2.808957966795267 1.3188e-07 au
i 5.105006107493016 6.425e-06 deg
node 37.75055719696778 6.2073e-05 deg
peri 227.4254762796408 7.0911e-05 deg
M 188.5320861335084 3.7392e-05 deg
tp 2459981.597903497050
(2023-Feb-06.09790350)
0.00021964 TDB
period 2059.832870737222
5.64
3.0364e-05
8.313e-08
d
yr
n .1747714608861226 2.5763e-09 deg/d
Q 3.527584755179016 3.4667e-08 au
  Orbit Determination Parameters
   # obs. used (total)      589  
   data-arc span      6720 days (18.40 yr)  
   first obs. used      2001-08-11  
   last obs. used      2020-01-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .60201  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jan-29 15:47:33  

Additional Information
 Earth MOID = 1.7966 au 
 Jupiter MOID = 1.55597 au 
 T_jup = 3.187 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457015.5 (2014-Dec-24.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1173003445703287 4.1685e-08  
q 2.794180481069666 1.325e-07 au
tp 2457917.324362640995
(2017-Jun-12.82436264)
0.00020103 TDB
node 37.95378826751205 6.2246e-05 deg
peri 226.7661110870169 7.0468e-05 deg
i 5.100959213796187 6.413e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      589  
   data-arc span      6720 days (18.40 yr)  
   first obs. used      2001-08-11  
   last obs. used      2020-01-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .60201  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jan-29 15:47:33  

Additional Information
 Jupiter MOID = 1.55597 au 
 T_jup = 3.187 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.737658571014067E-15 -5.405516291548215E-15 -6.513945720899938E-13 -3.418185259972579E-15 -1.046340424780542E-13 -3.033001339629076E-17
q -5.405516291548215E-15 1.755514696802075E-14 3.819259416889269E-12 1.705074796985598E-14 5.56101375137568E-13 5.006635058523867E-16
tp -6.513945720899938E-13 3.819259416889269E-12 4.041474766749431E-8 9.066828409871436E-12 6.671762682587768E-9 1.882145637803921E-12
node -3.418185259972579E-15 1.705074796985598E-14 9.066828409871436E-12 3.874569141458295E-9 -3.857409756656835E-9 -1.493539903115914E-10
peri -1.046340424780542E-13 5.56101375137568E-13 6.671762682587768E-9 -3.857409756656835E-9 4.965696387533039E-9 1.488953842830253E-10
i -3.033001339629076E-17 5.006635058523867E-16 1.882145637803921E-12 -1.493539903115914E-10 1.488953842830253E-10 4.112637799326788E-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 14.6   n/a MPO502755  

109261 (2001 QB108)          Discovered 2001-Aug-25 by LONEOS at Anderson Mesa
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

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Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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