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. October 9, 2009.
2. Orellana, Vanessa Hand (October 9, 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 October 24, 2012. Retrieved October 12, 2009.
3. "Pedro Elias Zadunaisky - Celebrity Death - Obituaries at". Tributes.com. October 7, 2009. Retrieved October 9, 2022.
4. "Archived copy". Archived from the original on September 2, 2011. Retrieved May 3, 2011.{{cite web}}: CS1 maint: archived copy as title (link)