A comet was mentioned in the Anglo-Saxon Chronicle that allegedly made an appearance in 729 AD.

Periodic comet with an orbital period of 71 years.

- 12P/Pons–Brooks

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Marseille Observatory

Astronomical observatory located in Marseille, France, with a history that goes back to the early 18th century.

Drawing of the 80 cm Foucault telescope of Marseille
Marseille Observatory use the GRAPE, a gravity simulation software to simulate planetary formation
Palais Longchamp

The Comet Pons-Brook was discovered by J.L. Pons in July 1812, however it was not seen again until June 1883.

Johann Franz Encke

German astronomer.

Johann Franz Encke

He correctly assigned a period of 71 years to the comet of 1812, now known as 12P/Pons-Brooks.

Jean-Louis Pons

French astronomer.

Jean-Louis Pons

He discovered five periodic comets, three of which, 7P/Pons–Winnecke, 12P/Pons–Brooks and 273P/Pons–Gambart, bear his name.

William Robert Brooks

British-born American astronomer, mainly noted as being one of the most prolific discoverers of new comets of all time, second only to Jean-Louis Pons.

Postcard of The Smith House and Observatory

He specialized in the discovery of comets, including periodic comets 12P/Pons-Brooks and 16P/Brooks.

122P/de Vico

Periodic comet with an orbital period of 74 years.

A comet was mentioned in the Anglo-Saxon Chronicle that allegedly made an appearance in 729 AD.

Daniel Kirkwood in 1884 noticed that the comet shares elements with comet 12P/Pons-Brooks.

Lipót Schulhof

Hungarian-Jewish astronomer, born in the Austrian Empire, who first worked at the Vienna Observatory and later spent most of his time at the Paris Observatory, observing comets and asteroids.

Location of Hungary (dark green) in Europe

Schulhof won the Lalande Prize again in 1920 for his calculation, assisted by Joseph Bossert, of the orbit of the periodic comet 12P/Pons–Brooks, discovered in 1812 by Pons.

Winifred Edgerton Merrill

Born in Ripon, Wisconsin.

She continued her interest in astronomy by independently using data from the Harvard observatory to calculate the orbit of the Pons-Brooks comet of 1883.