Ring system
A class D planet with a ring system
A ring system is comprised of rings of dust and other small particles orbiting around a planet in a flat disc-shaped region.
In 2152, the Enterprise engaged the Klingon D5 class battle cruiser IKS Bortas in the ring system of a gas giant. (ENT: "Judgment")
The planet Terralysium had a complex system of interwoven ring systems, each composed of unique radioactive particles. In 2257 the outermost ring destabilized and threatened to unleash a nuclear winter on the planet, but the debris was captured and redirected away by the USS Discovery. (DIS: "New Eden")
In 2371, the crew of the USS Voyager discovered a new element in the ring system of a class D planet in the Delta Quadrant. (VOY: "Emanations")
The rings of Ba'ku had special metaphasic properties that stopped the aging process for the inhabitants, the Ba'ku. In 2375, the Son'a, with the help of Starfleet Admiral Dougherty, attempted to collect the radiation for their own purposes, which would leave the planet uninhabitable. However, Captain Picard and the USS Enterprise-E were able to stop them before they could enact their plan. (Star Trek: Insurrection)
In 2380, the fifth moon of Mixtus III was destroyed by the USS Vancouver and USS Cerritos after its orbit became unstable, and formed a new ring system around the planet. (LD: "Cupid's Errant Arrow")
In 2384, Ion revealed to the crew of the Infinity that Ovidia IV's rings decayed into the planet's atmosphere, providing healing nutrients that the non-corporeal lifeforms living on the planet used to create and maintain the corporeal bodies. Once away from this unique environment, the bodies would begin to degrade, so no one except for Zero ever left Ovidia IV. (PRO: "Is There in Beauty No Truth?")
Planets with planetary rings
Mixtus III's new ring system, following the implosion of its unstable fifth moon
- Ba'ku
- Bhungar V
- Cajitar IV
- Camus II (remastered)
- Casperia Prime
- Dannus V
- Finibus IV
- Gamma II (remastered)
- Gravesworld
- Idlocana VI (fictional)
- Kaminar
- Jupiter
- Mariposa
- Mixtus III (following the demolition of its fifth moon in 2380)
- Mudd (remastered)
- Neptune
- Ovidia IV
- Persephone II
- Persephone IV
- Risa (mirror)
- Saturn
- Solum
- Talos III
- Tantalus V (remastered)
- Terralysium
- Theta Zeta
- Uranus
- Veridian II
- Veridian VI
- Yuri (Braslota II)
- Zeon (remastered)
- Unnamed planets
- Gas giant planet (Star Trek: Voyager, opening credits)
- Gas giant planet near Klingon space (ENT: "Judgment")
- Class D planet (VOY: "Emanations")
- Class T gas giant (VOY: "Good Shepherd")
- Planet close to Starbase 11 planet (TOS: "Court Martial", "The Menagerie, Part I")
- Moon close to P'Jem. (ENT: "The Andorian Incident")
- Several moons of M'talas Prime (ENT: "Dawn")
- Gas giant orbited by Andoria (ENT: "The Aenar")
- Planet in the Detrion system (LD: "Old Friends, New Planets")