| 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. |
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| Reference: 20001111/MPCPages.arc | Last Updated: 2013-03-29 |