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9693 Bleeker (6547 P-L)
Classification: Main-belt Asteroid          SPK-ID: 2009693
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2082028830252775 7.2619e-08  
a 2.429215489138814 1.0604e-08 AU
q 1.923445820810453 1.7866e-07 AU
i 3.0864144361416 7.3942e-06 deg
node 38.65918203690131 9.9633e-05 deg
peri 320.3785097954162 0.00010054 deg
M 119.3739984415961 1.2283e-05 deg
tp 2456541.930960970941
(2013-Sep-06.43096097)
4.7358e-05 JED
period 1382.921374885748
3.79
9.0554e-06
2.479e-08
d
yr
n .260318487035998 1.7046e-09 deg/d
Q 2.934985157467175 1.2812e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      956  
   data-arc span      19759 days (54.10 yr)  
   first obs. used      1960-09-24  
   last obs. used      2014-10-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .53853  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Nov-10 13:10:18  

Additional Information
 Earth MOID = .921405 AU 
 T_jup = 3.477 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.2 mag n/a PDS3 (MPC 32912)  

9693 Bleeker           Discovered 1960 Sept. 24 by C. J. van Houten and I. van Houten-Groeneveld on Palomar Schmidt plates taken by T. Gehrels.
Johan Bleeker (b. 1942), director of the Durch Space Research Organization and professor of space physics at Utrecht University, wrote many papers on x-ray astrophysics. The codiscoverer of the diffuse x-ray background of the sky, he was also the first author of discovery papers on the primary electrons in cosmic rays.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20001111/MPCPages.arcLast Updated: 2013-03-29

[ show close-approach data ]
Alternate Designations
 6547 P-L = 1979 SW9 = 1979 VJ 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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