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108905 (2001 PE9)
Classification: Main-belt Asteroid          SPK-ID: 2108905
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1296852910950279 4.2866e-08  
a 2.808888202333471 1.4313e-08 au
q 2.444616718160466 1.2453e-07 au
i 12.86454126257093 6.018e-06 deg
node 352.4087599909383 1.5702e-05 deg
peri 93.25060851442124 2.9634e-05 deg
M 271.6627277375734 2.3252e-05 deg
tp 2459422.431152437891
(2021-Jul-26.93115244)
0.00011139 TDB
period 1719.491795336406
4.71
1.3143e-05
3.598e-08
d
yr
n .2093641859626138 1.6002e-09 deg/d
Q 3.173159686506477 1.6169e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1057  
   data-arc span      7867 days (21.54 yr)  
   first obs. used      1999-04-11  
   last obs. used      2020-10-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50993  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 19:15:10  

Additional Information
 Earth MOID = 1.50153 au 
 Jupiter MOID = 2.09503 au 
 T_jup = 3.273 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457242.5 (2015-Aug-08.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1285240452850093 4.1912e-08  
q 2.44965207003163 1.2144e-07 au
tp 2457694.448224805507
(2016-Nov-01.94822481)
0.00011295 TDB
node 352.6777101326426 1.5669e-05 deg
peri 91.65443106285645 3.0112e-05 deg
i 12.8760188132154 6.0215e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1057  
   data-arc span      7867 days (21.54 yr)  
   first obs. used      1999-04-11  
   last obs. used      2020-10-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50993  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 19:15:10  

Additional Information
 Jupiter MOID = 2.09503 au 
 T_jup = 3.273 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.756607272294139E-15 -5.065087614686762E-15 7.546842629640263E-13 9.447898740310403E-16 2.923446197851654E-13 -6.194635962954303E-15
q -5.065087614686762E-15 1.474807717448451E-14 -2.039225775967458E-12 -3.097984025417067E-15 -8.198166883953616E-13 1.924466317430255E-14
tp 7.546842629640263E-13 -2.039225775967458E-12 1.275670556955953E-8 5.819910406924754E-12 2.892575754734511E-9 8.487196199430751E-12
node 9.447898740310403E-16 -3.097984025417067E-15 5.819910406924754E-12 2.455282518194771E-10 -2.375207399129004E-10 4.913886323877399E-12
peri 2.923446197851654E-13 -8.198166883953616E-13 2.892575754734511E-9 -2.375207399129004E-10 9.067116393032167E-10 -3.556838290718161E-12
i -6.194635962954303E-15 1.924466317430255E-14 8.487196199430751E-12 4.913886323877399E-12 -3.556838290718161E-12 3.625857500498935E-11

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.7   n/a MPO436524  

108905 (2001 PE9)          Discovered 2001-Aug-11 by NEAT at Haleakala
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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