NGC 3632 (also known as Caldwell 40) and NGC 3626 is an unbarred lenticular galaxy and Caldwell object in the constellation Leo. It was discovered by William Herschel, on 14 March 1784. It shines at magnitude +10.6/+10.9. Its celestial coordinates are RA 11h 20.1m , dec +18° 21′. It is located near the naked-eye-class A4 star Zosma, as well as galaxies NGC 3608, NGC 3607, NGC 3659, NGC 3686, NGC 3684, NGC 3691, NGC 3681, and NGC 3655. Its dimensions are 2′.7 × 1′.9. The galaxy belongs to the NGC 3607 group some 70 million light-years distant, itself one of the many Leo II groups.

400/500mm - 17.5" (3/22/96): bright, moderately large, elongated 3:2 NNW-SSE, 1.8'x1.2'. Strong, sharp concentration with a very small elongated core and a bright stellar nucleus. Located roughly 50' ENE of the NGC 3607 group.

600/800mm - 24" (5/27/17): at 200x; bright, fairly large, elongated 3:2 NNW-SSE, 2.0'x1.4', broadly concentrated halo with a larger brighter core and very low surface brightness outer halo. The core, though, is sharply concentrated with a very intense, quasi-stellar nucleus. Member of a group (LGG 237) that extends from NGC 3607/08 to NGC 3681/84/86.