Pedro Elías Zadunaisky, Argentine astronomer and mathematician (Rosario 10 December 1917 – Buenos Aires 07 October 2009)

Authored over 40 publications such as A Guide to Celestial Mechanics

Authored A determination of the orbit of Phoebe, ninth satellite of Saturn. Astron. J. (1954), with gained international repercussion

Computed the Halley comet with accuracy

The motion of Halley’s comet during the return of 1910. Astron. J. (1966)

METHODS

Developed Zadunaisky iterated defect correction

A method for estimation of errors propagated in the numerical solution of a system of ordinary differential equations. The theory of orbits in the Solar System and in Stellar Systems. Proc. Symposium Intern. Astron. Union 25, 1964

Un metodo de interacción para la resolución de sistemas de ecuaciones lineales algebricas.  Rev. Union Mat. Arg. (1955)

With V. Pereyra. On the convergence and precision of a process of successive differential equations (1965)

With Rodolfo Rodríguez. A stable method to estimate perturbations in differential equations. Computers & Mathematics with Aplication (1986) 

OTHER CONTRIBUTIONS

Small perturbations on artificial satellites as an inverse problem. Trans. Aerosp. Electr. Systems IEEE 39(4):1270-6, 2003

HONORS

Asteroid Zadunaisky 4617