Saturn's Moon: Telesto and Calypso

Saturn's Moon - Telesto and Calypso

T elesto and Calypso are called the Tethys Trojans because they circle Saturn in the same orbit as Tethys, about 60 degrees ahead of and behind that body. Telesto is the leading Trojan and Calypso is the trailing Trojan. Both were found in 1981 by B. Smith through ground-based observations made in 1980.

PHYSICAL DATA FOR TELESTO AND CALYPSO
Mass (kg)	?
Mass (Earth = 1)	?
Radius (km)	17 x 14 x 13
Radius (Earth = 1)	2.6654e - 03
Mean Density (g/cm³)	?
Mean Distance from Jupiter (km)	294,660
Magnitude (V₀)	18.7

ORBITAL DATA FOR TELESTO AND CALYPSO
Rotational period (days)	?
Orbital period (days)	1.8878
Mean orbital velocity (km/s)	11.36
Orbital eccentricity	0.00
Orbital inclination (degrees)	0.0
Escape (km/s)	?
Albedo	0.5

Physical Data Key

Mass	Mass
Mass	Mass compared to that of Earth.
Radius	Radius
Radius	Radius compared to that of Earth.
Mean Density	Average Density.
Distance	Distance to the planet's center.
Magnitude	The brightness of a star or object.

Orbital Data Key

Rotational Period	Number of days to make one complete rotation.
Orbital Period	Number of days to obital the planet.
Mean Orbital Velocity	Average obital speed.
Orbital Eccentricity	Eccentricity.
Orbital Inclination	The tilt of the moon or planet.
Escape	Escape Velocity.
Albedo	Visual geometric albedo.