René Jarry-Desloges (February 1, 1868 – June 1, 1951) was a French amateur

astronomer An astronomer is a scientist in the field of astronomy who focuses their studies on a specific question or field outside the scope of Earth. They observe astronomical objects such as stars, planets, moons, comets and galaxies – in either ...

who worked at his own observatory. He observed the

planet A planet is a large, rounded astronomical body that is neither a star nor its remnant. The best available theory of planet formation is the nebular hypothesis, which posits that an interstellar cloud collapses out of a nebula to create a you ...

s, and claimed to have confirmed

Giovanni Schiaparelli Giovanni Virginio Schiaparelli ( , also , ; 14 March 1835 – 4 July 1910) was an Italian astronomer and science historian. Biography He studied at the University of Turin, graduating in 1854, and later did research at Berlin Observatory, ...

's value of the rotational period of Mercury. However, radar observations made in 1965 showed that they were both wrong. The French Academy of Sciences awarded him the Janssen Medal for 1914. There is an impact crater on Mars named in his honor.HiRise, Crater Wall South of Jarry-Desloges Crater (PSP_003666_1660)
/ref> In 1921, he received the Prix Jules Janssen, the highest award of the Société astronomique de France, the French astronomical society.

References

1868 births 1951 deaths 20th-century French astronomers {{france-astronomer-stub