Clematis is asteroid #1101 and also known as 1928 SJ. Clematis was discovered by the German astronomer Karl Wilhelm Reinmuth at the Heidelberg-Königstuhl State Observatory. Clematis’ orbit is characterized by a semi-major axis of 3.23 Astronomical Units, an eccentricity of 0.08, a period of revolution of 2 120 days, and an inclination of 21.4 degrees. Clematis’ spectral type is unknown, but presumed to be C. Clematis is a very slow rotator, completing one rotation in one and a half Earth-days. Clematis is the head of the asteroid-subfamily Clematis. This asteroid-subfamily is characterized by high inclinations compared to the ecliptic. The Clematis subfamily has only seventeen members and is itself a member of the asteroid-family Alauda.

Clematis is named after a genus of plants within the botanical family Ranunculaceae (buttercup or crowfoot). The genus Clematis comprises roughly three-hundred species. They are very different in their morphology, especially the blossoms can be changed by breeding. Hence Clematis species are very popular as ornamental plants in gardens and parks. The name of the genus is derived from an Ancient Greek word for climbing plants.

Many asteroids are named after plants. Most often not because of a certain peculiarity, but a row of asteroids simply gets a row of plant names. So I treat this asteroid here only because it is the head of the Clematis asteroid-subfamily. Clematis nevertheless is an astrological force, which must have a reasonable interpretation in astrological charts. Clematis represents ornamental plants, of course preferably of the species Clematis, and climbing plants. Derived from the latter, Clematis could also indicate heading upwards.