An Etymological Dictionary of Astronomy and Astrophysics

4 terms — C › C

C CA CC CD CE CG CH CI CL CM CN CO CP CR CS CU CY

c Orionis   c-شکارگر، c-اریون   c-Šekârgar, c-Oyon Fr.: c Orionis Same as → 42 Orionis. See also: Star name in the → Bayer designation scheme.

C ring   حلقه‌ی ِ C   halqe-ye C Fr.: anneau C One of → Saturn’s rings, lying beyond the → D ring and before the → B ring, at 74,658 km from the center of Saturn, with a width of 17,500 km. Same as the → Crepe ring. See also: → ring.

C-symmetry   همامونی ِ بار   hamâmuni-ye bâr Fr.: symétrie de charge Same as → charge conjugation and → charge symmetry. See also: → charge; → symmetry.

C-type asteroid   سیارک ِ گونه‌ی ِ C   sayârak-e gune-ye C Fr.: astéroïde de type C An → asteroid that belongs to the family of → carbonaceous asteroids. They are → depleted in → hydrogen and → helium, have chemical ratios akin to solar composition, and show low → albedo (0.03-0.09). C-type asteroids are the most common variety, forming around 75% of known asteroids. They inhabit → main belt’s outer regions. See also: C stands for → carbonaceous; → type; → asteroid.