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Minor planets discovered: 14 (7 each)^[1]
see § List of discovered minor planets

Paul-Pierre Henry (21 August 1848 – 4 January 1905) and his brother Prosper-Mathieu Henry (10 December 1849 – 25 July 1903) were French opticians and astronomers.

They made refracting telescopes and instruments for observatories, and were involved in the origin of the Carte du Ciel project.

Between the two of them, they discovered a total of 14 asteroids. The Minor Planet Center credits their discoveries under "P. P. Henry" and "P. M. Henry", respectively. The lunar crater Henry Frères (Henry brothers) and the Martian crater Henry are named after them. They were jointly awarded the first Valz Prize in 1877 for their sky charts designed to facilitate the search for minor planets.^[2]^[3]

List of discovered minor planets

Discoveries by Paul Henry (P. P. Henry)^[1]
126 Velleda	5 November 1872	list
141 Lumen	13 January 1875	list
152 Atala	2 November 1875	list
159 Aemilia	26 January 1876	list
164 Eva	12 July 1876	list
177 Irma	5 November 1877	list
227 Philosophia	12 August 1882	list

Discoveries by Prosper Henry
125 Liberatrix	11 September 1872	list
127 Johanna	5 November 1872	list
148 Gallia	7 August 1875	list
154 Bertha	4 November 1875	list
162 Laurentia	21 April 1876	list
169 Zelia	28 September 1876	list
186 Celuta	6 April 1878	list

Obituaries

Paul Henry

Prosper Henry

References

^ ^a ^b "Minor Planet Discoverers (by number)". Minor Planet Center. 2018. Retrieved 27 March 2018.
^ "The Valz Prize". Popular Astronomy. 21: 384. 1913.
^ Ernest Maindron (1880). "Les Fondations de Prix à l'Académie des Sciences". La Revue Scientifique. 26–27: 87–88.