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Viktor Safronov

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Soviet astronomer (1917–1999)

Viktor Sergeevich Safronov (Russian:Ви́ктор Серге́евич Сафро́нов) (born Velikie Luki; 11 October 1917 inRussia – 18 September 1999 inMoscow, Russia) was aSoviet astronomer who put forward the low-mass-nebula model of planet formation, a consistent picture of how theplanets formed from a disk of gas and dust around theSun.

Biography and legacy

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Safronov graduated fromMoscow State University Department of Mechanics and Mathematics in 1941. He defended a dissertation for the Doctor of Physical and Mathematical Sciences in 1968. His scientific interests covered planetarycosmogony,astrophysics andgeophysics.

Hisplanetesimal hypothesis of planet formation is still widely accepted among astronomers, although alternative theories exist (such as the gravitational fragmentation of theprotoplanetary disk directly into planets).

Aminor planet,3615 Safronov, discovered byUS-American astronomerEdward L. G. Bowell in 1983, is named after him,^[1]as isSafronov Regio on Pluto.^[2]

Awards

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Otto Schmidt USSR Academy of Sciences Prize (1974)
Leonard Prize Meteoritical Society (1989)
Kuiper Prize in Planetary Science (1990)

Selected publications

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Evolution of the Protoplanetary Cloud and Formation of the Earth and the Planets. Moscow:Nauka Press, 1969. Trans. NASA TTF 677, 1972.

References

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^Schmadel, Lutz D. (2003).Dictionary of Minor Planet Names (5th ed.). New York: Springer Verlag. p. 304.ISBN 3-540-00238-3.
^"Safronov Regio".Gazetteer of Planetary Nomenclature. USGS Astrogeology Research Program. (Center Latitude: -13.36°, Center Longitude: 209.49°)