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11581 Philipdejager (1994 PK9)
Classification: Main-belt Asteroid          SPK-ID: 2011581
[ 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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08837722793709625 3.6488e-08  
a 2.975463350975192 1.5288e-08 au
q 2.712500148187581 1.051e-07 au
i 10.10218193492482 4.7063e-06 deg
node 159.3608436222197 2.1831e-05 deg
peri 159.3068108258227 3.4826e-05 deg
M 57.93799848292189 2.6254e-05 deg
tp 2458898.788876367990
(2020-Feb-19.28887637)		 0.00013688 TDB
period 1874.693764913881
5.13		 1.4448e-05
3.956e-08		 d
yr
n .1920313635952897 1.48e-09 deg/d
Q 3.238426553762803 1.6639e-08 au
   Orbit Determination Parameters
   # obs. used (total)      1594  
   data-arc span      10597 days (29.01 yr)  
   first obs. used      1992-03-02  
   last obs. used      2021-03-07  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .47083  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 22:51:23  

Additional Information
 Earth MOID = 1.70062 au 
 Jupiter MOID = 2.10065 au 
 T_jup = 3.232 
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[ 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 13.88   n/a E2021B10  
diameter diameter 6.043 km 0.208 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.122   0.018 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

11581 Philipdejager           Discovered 1994 Aug. 10 by E. W. Elst at the European Southern Observatory.
Philip de Jager (b. 1969) is a Belgian percussionist. A brilliant student at the Antwerp Conservatory, he now performs with several Belgian orchestras. He has also performed for the musicals Les Misérables and The Phantom of the Opera.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20000726/MPCPages.arcLast Updated: 2013-03-29

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Alternate Designations
 1994 PK9 = 1992 EV7 = 1998 HR121 
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