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JPL Small-Body Database Browser
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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 ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1296852627807448 4.9138e-08  
a 2.808888209026584 2.0091e-08 au
q 2.444616803517236 1.3785e-07 au
i 12.86453770616803 6.6289e-06 deg
node 352.4087691164848 2.0865e-05 deg
peri 93.25061691615856 3.4478e-05 deg
M 271.6627049529099 2.6406e-05 deg
tp 2459422.431262773873
(2021-Jul-26.93126277)
0.00012738 TDB
period 1719.491801482299
4.71
1.8449e-05
5.051e-08
d
yr
n .2093641852142939 2.2463e-09 deg/d
Q 3.173159614535932 2.2697e-08 au
  Orbit Determination Parameters
   # obs. used (total)      743  
   data-arc span      6950 days (19.03 yr)  
   first obs. used      1999-04-11  
   last obs. used      2018-04-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51939  
   source      ORB  
   producer      Otto Matic  
   solution date      2018-May-07 05:18:20  

Additional Information
 Earth MOID = 1.50153 au 
 Jupiter MOID = 2.09503 au 
 T_jup = 3.273 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456353.5 (2013-Mar-02.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .129045719057591 4.7858e-08  
q 2.446787720969976 1.3358e-07 au
tp 2455972.521828927095
(2012-Feb-15.02182893)
0.00012291 TDB
node 352.7028925130379 2.0837e-05 deg
peri 91.42157812117662 3.4956e-05 deg
i 12.87775821009206 6.6301e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      743  
   data-arc span      6950 days (19.03 yr)  
   first obs. used      1999-04-11  
   last obs. used      2018-04-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51939  
   source      ORB  
   producer      Otto Matic  
   solution date      2018-May-07 05:18:20  

Additional Information
 Jupiter MOID = 2.09503 au 
 T_jup = 3.273 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.290423590978838E-15 -6.338644177230055E-15 1.740109754238221E-12 8.122826710581427E-15 4.881410878978143E-13 -1.149132908815147E-14
q -6.338644177230055E-15 1.78423974562193E-14 -4.757358403030893E-12 -2.224403399774585E-14 -1.322755254736893E-12 3.305187246272684E-14
tp 1.740109754238221E-12 -4.757358403030893E-12 1.510781794738572E-8 1.622571882692739E-11 3.457205511185423E-9 -9.14906883890683E-13
node 8.122826710581427E-15 -2.224403399774585E-14 1.622571882692739E-11 4.341773034484102E-10 -4.186476326936857E-10 -2.014930445149633E-11
peri 4.881410878978143E-13 -1.322755254736893E-12 3.457205511185423E-9 -4.186476326936857E-10 1.221937372214422E-9 1.899304515019413E-11
i -1.149132908815147E-14 3.305187246272684E-14 -9.14906883890683E-13 -2.014930445149633E-11 1.899304515019413E-11 4.395826057065932E-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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