Pedro E. Zadunaisky

Pedro Elías Zadunaisky (December 10, 1917 – October 7, 2009) was an Argentine astronomer and mathematician who plotted the orbit of Saturn's most-distant moon, Phoebe, as well as several comets including Halley's Comet, and various satellites including Explorer I.

Zadunaisky was born in Rosario, Santa Fe. He was once a senior astronomer and a mathematician at the Smithsonian Astrophysical Observatory and at NASA's Goddard Space Flight Center.[1][2] 4617 Zadunaisky is an asteroid named in his honor. He died on October 7, 2009 at the age of 91.[3] He wrote the book "A Guide to Celestial Mechanics" in 1961.[4]

References
  1. "Astronomy pioneer Pedro Elias Zadunaisky dies". The San Francisco Chronicle. 9 October 2009.
  2. Orellana, Vanessa Hand (9 October 2009). "Pedro Elias Zadunaisky, 1917-2009: Mathematician and astronomer aided U.S. in space race with Russians". Chicago Tribune. Associated Press. Archived from the original on 24 October 2012. Retrieved 12 October 2009.
  3. http://www.tributes.com/show/Pedro-Zadunaisky-86909685
  4. "Archived copy". Archived from the original on 2011-09-02. Retrieved 2011-05-03.CS1 maint: archived copy as title (link)



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