This page lists 15 moons whose names begin with the letter T, spanning from “Tarqeq” to “Triton.” They range from tiny irregular moons just a few kilometers wide to massive worlds larger than some planets. These moons orbit Saturn, Jupiter, Uranus, and Neptune, giving scientists a window into how the solar system formed and changed over billions of years.
Moons are natural satellites that orbit planets, held in place by gravity. They come in all shapes and sizes, from smooth icy spheres to oddly shaped rocky fragments captured long ago. Some, like Saturn’s Titan, have thick atmospheres and surface lakes of liquid methane, making them among the most fascinating worlds we know.
Below you’ll find the table with Moon, Parent Planet, Diameter (km), Discovery Year, and Description.
Moon: The name of the natural satellite, so you can identify it, search for more details, or compare it with others on this list.
Parent Planet: The planet each moon orbits, helping you see which worlds host the most moons and how they are grouped by their home system.
Diameter (km): The moon’s approximate size in kilometers, letting you quickly gauge whether it is a small rocky fragment or a large, planet-sized body.
Discovery Year: The year scientists first confirmed the moon’s existence, showing you how centuries of exploration and improving technology have expanded our knowledge of the solar system.
Description: A short overview of each moon’s key traits, orbit, or history, giving you a useful snapshot without needing to search anywhere else.
Moons
Moon
Parent Planet
Diameter (km)
Discovery Year
Tarqeq
Saturn
7
2007
Tarvos
Saturn
15
2000
Taygete
Jupiter
5
2000
Telesto
Saturn
30
1980
Tethys
Saturn
1,062
1684
Thalassa
Neptune
80
1989
Thebe
Jupiter
100
1979
Thelxinoe
Jupiter
2
2000
Themisto
Jupiter
8
1975
Thrymr
Saturn
6
2000
Thyone
Jupiter
4
2001
Titan
Saturn
5,150
1655
Titania
Uranus
1,578
1787
Trinculo
Uranus
10
2001
Triton
Neptune
2,707
1846
Descriptions
Tarqeq
A tiny irregular moon of Saturn belonging to the Inuit group, orbiting at a great distance in a prograde path. Named after a moon deity in Inuit mythology, it was found in 2007 during a survey by Scott Sheppard and colleagues.
Tarvos
An irregular moon of Saturn in the Gallic group, following a distant prograde orbit around the planet. Named after a three-horned bull deity from Gaulish mythology, it was discovered in 2000 during a large outer-moon survey.
Taygete
A small irregular moon of Jupiter in the Ananke group, traveling in a distant retrograde orbit far from the planet. Named after one of the seven Pleiades, daughters of the Titan Atlas in Greek mythology.
Telesto
A small moon of Saturn that shares its orbit with the larger Tethys, sitting 60 degrees ahead at a Lagrangian point. Its unusually smooth, bright surface is thought to be coated with fine icy particles redistributed from nearby moons.
Tethys
A mid-sized icy moon of Saturn best known for the enormous Odysseus impact crater and the vast Ithaca Chasma canyon that stretches nearly three-quarters of the way around its surface. Discovered by Giovanni Cassini in 1684.
Thalassa
A small inner moon of Neptune discovered by Voyager 2, orbiting just inside the planet’s ring system. Its irregular, flattened shape suggests it may be a loose pile of debris left over from ring material or an ancient collision.
Thebe
An inner moon of Jupiter discovered by Voyager 1, orbiting between Amalthea and Io. Its reddish, heavily cratered surface sheds dust that contributes to Jupiter’s faint outer gossamer ring.
Thelxinoe
One of Jupiter’s tiniest known moons, a member of the retrograde Ananke group orbiting far from the planet. Named after a daughter of Zeus and the moon goddess Selene in Greek mythology.
Themisto
A small irregular moon of Jupiter with a unique orbit between the main Galilean moons and the distant irregular group. First spotted in 1975 and then lost, it was rediscovered in 2000 and officially confirmed.
Thrymr
A tiny irregular moon of Saturn in the Norse group, following a distant retrograde orbit around the planet. Named after the frost giant in Norse mythology who stole Thor’s hammer Mjolnir and demanded the goddess Freyja in exchange.
Thyone
A small irregular moon of Jupiter in the Ananke group, traveling in a retrograde orbit far from the planet. Named after a mortal woman in Greek mythology who was later deified after Zeus acknowledged their son Dionysus.
Titan
The largest moon of Saturn and the only moon in the solar system with a dense atmosphere, composed mainly of nitrogen. Its surface features lakes and rivers of liquid methane, making it one of the most Earth-like worlds known. Discovered by Christiaan Huygens.
Titania
The largest moon of Uranus, its surface crossed by long fault valleys and scattered with impact craters that hint at past geological activity. Discovered by William Herschel in 1787 and named after the fairy queen in Shakespeare’s A Midsummer Night’s Dream.
Trinculo
A small irregular moon of Uranus following a distant retrograde orbit, discovered in 2001. Named after the comic, drunken jester in Shakespeare’s The Tempest, following the Uranian tradition of Shakespearean moon names.
Triton
The largest moon of Neptune and the only large moon in the solar system with a retrograde orbit, strongly suggesting it was captured from the Kuiper Belt long ago. It has an active, icy surface with nitrogen geysers that shoot material several kilometers high.
If you think there is a missing term, let us know using the contact form.
