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108906 (2001 PL9)
Classification: Apollo [NEO]          SPK-ID: 2108906
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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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.


Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 154 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3606698854614614 6.6942e-08  
a 1.235402778058401 2.8712e-09 au
q .7898301995973063 8.309e-08 au
i 20.92783806349696 7.6791e-06 deg
node 172.0612665008318 9.6454e-06 deg
peri 343.9901932935954 1.3634e-05 deg
M 319.2361987283358 1.2985e-05 deg
tp 2459453.291516031830
(2021-Aug-26.79151603)
1.8089e-05 TDB
period 501.5465960891733
1.37
1.7485e-06
4.787e-09
d
yr
n .717779769232036 2.5023e-09 deg/d
Q 1.680975356519496 3.9068e-09 au
  Orbit Determination Parameters
   # obs. used (total)      578  
   data-arc span      6954 days (19.04 yr)  
   first obs. used      2001-08-05  
   last obs. used      2020-08-19  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .48809  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 16:13:04  

Additional Information
 Earth MOID = .192117 au 
 Jupiter MOID = 3.31278 au 
 T_jup = 5.061 
[ show covariance matrix ]

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 17.85   n/a E2021B55  

108906 (2001 PL9)          Discovered 2001-Aug-11 by NEAT at Palomar
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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