About 325 B.C. Aristoteles discovered the open cluster M 41. It was seen again by Hodierna and Flamsteed; see: Messier, C., Catalogue des Nébuleuses et des amas d'Etoiles, Hist. de l'Acad. Sci. 1771, 435-461.

D N NI Y I T Observer Name Con Type S
1 N 2287 -325 E v Hodierna 1654?
Flamsteed 16.2.1702
M 41 CMA II3m 4