When was Telesto moon discovered and by whom?
Telesto was discovered in 1980 by Smith, Reitsema, Larson, and Fountain using ground-based observations. It was provisionally designated S/1980 S 13 before receiving its official name in 1983.
Short answers, pulled from the story.
Telesto was discovered in 1980 by Smith, Reitsema, Larson, and Fountain using ground-based observations. It was provisionally designated S/1980 S 13 before receiving its official name in 1983.
Telesto is co-orbital with Tethys, residing at Tethys's leading Lagrangian point, 60 degrees ahead of Tethys in the same orbit. This arrangement was first identified by Seidelmann and colleagues in 1981.
Calypso occupies the trailing Lagrangian point of Tethys, sitting 60 degrees behind Tethys, while Telesto sits 60 degrees ahead. The two moons bracket Tethys at equal angular distances on opposite sides.
The Cassini probe flew by Telesto on the 11th of October 2005 and found its surface to be surprisingly smooth and largely devoid of small impact craters. This was unexpected for a small solar system object.
Telesto is officially designated Saturn XIII and Tethys B, in addition to its name. It was named after Telesto of Greek mythology in 1983.
Saturn has at least four trojan moons. Telesto and Calypso share Tethys's orbit as trojans, and the Saturnian system has two additional trojan moons beyond that pair.